so you could go like:
King of the <insert title here> - this could be for being the best in combat, exploration, trade, Rescue etc. For being the best in the squadron.
The Guide of <insert title here> - this is for people who know a lot about combat, trade, ship builds, outside things like INARA or something.
The Most <insert thing here> done. - this is for the most lightyears travelled, or combat zone or something.
but thats not as creative as giving theese titles all a special name that fits the guild like
The Taker of Souls - Being so good in combat that he doesn't die
The Jack-of-All - Knowing everything about all the different aspects of Elite
The Friend in Need - He's always helping other squadron members
So it sounds cool and maybe can have multiple for example: MrWoofy The Gatherer of Scans, Master of None, CQC aficionado.
or use pictographs to represent things like
⋆⋆⋆⋆⋆ for the quality of the squadron member's work in the squadron
$$$$$ for how much assets the player has
¤¤¤¤¤ how good of an explorer is
or Codes.
Sadly there is nothing in game you can do for that, but it would be nice if there would be like custom decals you can upload and you reward players with the graphic of the special thing they did. It would be nice if people could design special paint jobs for ships that can be acquired trough helping your squadron.