Regular old CCI 40 gr CPRN is still pretty quiet in my T1X, rated at 1250 fps. It'e very quiet from my Mark IV 22/45. It's my go-to.
Federal American Eagle Suppressor 45 gr CPRN is very quiet in anything, rated at 950 fps. I don't particularly recommend it as it's been very inconsistent for me, poor accuracy.
Haven't tried CCI Quiet. Copper plated ammo is filthy enough that I don't feel the need to make it worse with exposed lead.
.22LR in general is going to be filthy in a suppressor, so stay on your cleaning game.