Talking about completion, if we look at the META-Wishlist Top 50 we get this picture for the continents (grouping all of Oceania together):
Asia: 18 (Wolverine, Walrus, Musk Ox, Hamadryas Baboon, Takin, Markhor, Saiga, Honey Badger, Blackbuck, Great White Pelican, Sea Otter, Wild Boar, Pallas's Cat, Wapiti, Sloth Bear, Mute Swan, Gaur, Golden Snub-Nosed Monkey)
Africa: 17 (Secretary Bird, Hamadryas Baboon, Shoebill, Grey Crowned Crane, Serval, Honey Badger, Gelada, Great White Pelican, Mantled Guereza, Wild Boar, Coquerel's Sifaka, Greater Kudu, African Leopard, Aye-Aye, Nile Crocodile, Kirk's Dik-Dik, Gerenuk)
South America: 13 (South American Coati, Black Howler Monkey, Golden Lion Tamarin, West Indian Manatee, Ocelot, Spectacled Bear, Patagonian Mara, Greater Rhea, Southern Tamandua, Geoffroy's Spider Monkey, Bush Dog, Collared Peccary, Guianan Squirrel Monkey)
North America: 12 (Wolverine, Walrus, Musk Ox, West Indian Manatee, Ocelot, Sea Otter, Geoffroy's Spider Monkey, Wapiti, American Black Bear, Bush Dog, Alligator Snapping Turtle, Collared Peccary)
Europe: 7 (Wolverine, Walrus, Musk Ox, Saiga, Great White Pelican, Wild Boar, Mute Swan)
Oceania: 4 (Tasmanian Devil, Goodfellow's Tree Kangaroo, North Island Brown Kiwi, Short-Beaked Echidna)
One thing I noticed is a lot of these species are found across multiple continents, so here is a version with those species removed:
Africa: 13 (Secretary Bird, Shoebill, Grey Crowned Crane, Serval, Gelada, Mantled Guereza, Coquerel's Sifaka, Greater Kudu, African Leopard, Aye-Aye, Nile Crocodile, Kirk's Dik-Dik, Gerenuk)
South America: 8 (South American Coati, Black Howler Monkey, Golden Lion Tamarin, Spectacled Bear, Patagonian Mara, Greater Rhea, Southern Tamandua, Guianan Squirrel Monkey)
Asia: 7 (Takin, Markhor, Blackbuck, Pallas's Cat, Sloth Bear, Gaur, Golden Snub-Nosed Monkey)
Oceania: 4 (Tasmanian Devil, Goodfellow's Tree Kangaroo, North Island Brown Kiwi, Short-Beaked Echidna)
North America: 2 (American Black Bear, Alligator Snapping Turtle)
Europe: 0
I think this is interesting to see compared to the map that
@yoav_r posted.