I have 4 platinums, 3 of which are on Vita. I have Gravity Rush (pretty easy save the one Gold medal you have to get), resistance Burning skies is incredibly simple (beat the game, play one round of online multiplayer). Rayman is my first, though. Takes a lot of work to find everything and get all the unlockables, but it's not that hard.
My Console Library:
PS5, Switch, XSX
PS4, PS3, PS2, PS1, WiiU, Wii, GCN, N64 SNES, XBO, 360
3DS, DS, GBA, Vita, PSP, Android