You have Dropbox, Mega, DA mainly site that should help

I'm probably going to itaku or Weasyl, but I'm not super up to date on this sort of thing. I'd be interested to see which one is best for the large migration.

I just have an "art dump" section in my pinned on Twitter for the time being.

I have a discord server specific for cataloging my commissions

Im heading over to Inkbunny

I'm still thinking about it, but if FA becomes a problem, I think I'm going to Eka's Portal.

Sofurry, Inkbunny, and Weasyl are all decent options

Weasyl is where a lot of people are/already have gone

You could use my virtual pet site when it is up and running as a possible alternative.