I have a list
Nile Monitor - Updates skin textures similar to Asian Water Monitor
Bornean Orangutan - Hanging shaggy hair, revised skin detail
Giant Anteater - Updated fur and hair textures
Koala - Updated ear hair textures, revised fur texture, bigger nose, less fluffy face and a more realistic skull shape
Red Kangaroo - Updated fur like on the wallaby and quokka, also it could use a facelift
Red Panda - Updated face design, revised fur textures, more variations in patterns and colours
Saltwater Crocodile - More rigid scutes more like the American Alligator, and more different colours, revised textures and head shape and mouth interior
American Bison - Giving the female a unique look to the male, and making them shaggy, with a few variations with like a half moulted appearance
Malayan Tapir - Changing the model, head shape, trunk shape, arched back, removal of Baird's Tapir mole
West African Lion - Facelift, revised hair textures and redesigned manes as well as new mane variations, revised Leucistic colours
Bengal and Siberian Tiger - Giving them more detailed ruffs (cheek hair), updated fur textures, added Royal and Melanistic Bengal Tiger variants, remove Leucistic Siberian,
Western Chimpanzee and Bonobo - Giving them some darker skinned variants, potentially a grey variant too, and more shaggy hair, as well as updated skin textures. Beard hairs on the male chimpanzees, and male Bonobos having more hair on their heads, at least there can be variants that include these features.
Komodo Dragon - Like the Nile Monitor, being brought more in line with the Asian Water Monitor
California Sea Lion - Make the male bigger
Black Wildebeest - Redo the hair to bring it to the same level as the Blue Wildebeest, as well as darker colouration
Timber Wolf - Facelift, and hair redo
Grizzly Bear, Himalayan Brown Bear and Formosan Black Bear - Make them less fat and more athletic and muscular animals in appearance, facelifts to all, Himalayan bear to be a bit fluffier to differentiate it more from the Grizzly, Formosan to have some better fur textures. Some revised fur textures for the Grizzly and some more colour variations.
Aardvark - Given similar long hairs like the Red River Hog, and a slightly thinner appearance
African Savannah Elephant - Just a few better skin textures, tusk variations
Indian Elephant - Just a few better skin textures like African Savannah Elephant, tusk variations
African Wild Dog - Fur texture redo, more pattern varieties and a facelift
Aldabra Giant Tortoise - Texture Redo
Amur Leopard - Darker, less cloudy eyes and some lighter fur variations, and less fluffy face, slightly revised head shape
Lesser Antillean Iguana - Add more skin variations and bigger dewlap
Green Iguana - Add more colours and skin variations as well as a bigger dewlap
Bactrian Camel - Model brought to Dromedary Camel level, and variants with heavier coats
Baird's Tapir - Made a bit more realistic in the model
Black-and-White Ruffed Lemur - Updated hair textures and face details
Bongo - Model redo and fur textures, bulkier build, slightly thinner and longer head
Pronghorn Antelope - Fur texture update, darker markings and eyes, and longer horns on the male
Western Lowland Gorilla - Darker colouration, more intense eyes, shaggier hair, more skin detail
Red Ruffed Lemur - Updated hair textures and face details
Gemsbok - Updated fur and horn textures, as well as more colour variations
Dama Gazelle - Lighter colours and more pattern variations to resemble some other subspecies
Sand Cat - Slightly tighter fit face and less of a fluffy face, and slightly more triangle-shaped ears
Reticulated Giraffe - More intense pattern, revised mane, more detailed and slightly thinner head, added spotless giraffe variant
Black Rhinoceros - Slightly thinner build, horn shape and colour variations and some browner colour variants
Arctic Wolf - Revised fur textures and colour, and a slight facelift
Reindeer - Antler variations and thinner build and revised hair
Galapagos Giant Tortoise - More skin detail and some other colour details like yellow around the beak
Eurasian Lynx - Caracal ear flicks, slightly revised face details
Sable Antelope - Revised model and fur textures, and subspecies inspired variations
Caracal - Pink-nosed variation, Male with larger tufts, cheek whisker spot, longer tail, and slightly revised face details
Polar Bear - more variants, algae covered, brown/cream variant and white and yellow, more athletic build, facelift
Dall Sheep - Revised fur and horn textures, Fannin and Stone variants
Dingo - More colour variants, facelift, and some variants having thicker fur
Common Warthog - Revised mane and fur textures, head sculpt, added hairs like those of the Red River Hog, and more detailed tusks
Pygmy Hippopotamus - Slimmed down model
Common Ostrich - Revised feathers, smaller and slightly remodelled head and more detailed beak, a Somali and North African variant
Okapi - Remodel of body and head and more fur and skin details, lighter brown colour variant
American Alligator - Slightly remodelled heads, additional skin variants
Greater Flamingo - Updated feather textures, and wing positions
Alpine Ibex - More detailed fur textures and horn textures, slightly darker eyes
Dhole - Variants with white underbellies and some that have thicker fur
Cheetah - Revised face design, flatter scalp, higher ears and a thinner build
Springbok - Added fur patch on the rump, more intense markings, added Pronking animation, and new colour variations
Hippopotamus - Longer head, added hair to tail and ears
Southern White Rhinoceros - Additional horn variations, revised model, larger calf, remade lips
African Buffalo - Horn colour, added Forest Buffalo variant, less thick hair
Spotted Hyena - Resculpted head and ears, changed colour variations and cub model
Plains Zebra - More intense stripes, shorter fur, revised main, moved to the Przewalski's Horse rig, added Burchell's and Chapman's zebra variations, as well as the Erythristic and Melanistic/Polka dot zebra variants, and a potential Quagga project variant
Cougar - Revised face
Snow Leopard - Remade model, revised face shape and details
Gharial - Updated skin textures and colours, thinner jaws, detailed scutes, thinner jaws, a lower stance being closer to the ground, almost sliding on the ground
African Penguin - swapped to Little Penguin rig, which is better suited to a shorter postured penguin, revised feather textures
Jaguar - Changed colour intensity, shorter fur and revised fur texture, revised head sculpt
Indian Rhinoceros - Revised skin textures and horn variations
Binturong - Added shaggier hair
Brown-Throated Sloth - Added algae variant and spotted variant
Chinese Pangolin - Improved scale textures and effects
Mandrill - Improved fur textures and model design, male with more fur and a larger mane
Japanese Macaque - Improved fur textures
Indian Peafowl - Improved feather textures and tail feather redesign
Meerkat - Changed head sculpt and less fluffy face, darker markings and improved fur texture
Moose - Improved dewlap
Nyala - Improved fur textures and longer hair on the back and hanging from the back and neck, revised horn texture and design
Proboscis Monkey - Nose shape variations
Red Crowned Crane - Improved feather textures
Emu - Less fluffy with improved feather textures
Southern Cassowary - Less fluffy with improved feather textures, a light blue skin variant and casque variations
Ring-Tailed Lemur - Improved model and face sculpt and revised fur textures
Somali Wild Ass - Adding the black spot that marks the chestnuts on the front legs
I think that is all of them
But most definitely those two need a bit of work as they are way to simular just like the Chimp and the Bonobo
