If I must limit to three I would have a Vic Cadet, full size Benchmade Griptilian, and a budget fixed blade of some sort.
Or, if I can dream, a Cadet, a CRK Small Insingo, and a Carothers EDC 2 or Field Knife.
Ask me next week and you may get different answers.
If I can’t pick fixed for the third knife, then I am not sure what I would pick.
I happen to like these 3 knife challenge threads.