Hello gamedev here, certainly most of the games are still available on the site, even when isn't listed on the searches, just go direct to the game/developer page; but don't expect any of the games will be on searches again, I've been on this sittuaion for over two years, and the 'shadowban' is irreversible.
Viewing post in Adult games not showing in search
It's kind of funny (in a non-humorous sense) that they're treating us like we're living during the prohibition. (Another game dev here.) It's pretty Orwellian that your games would have received the shadowban when they do not have the sort of content that Itch is claiming they're stopping. More than "pretty" Orwellian, actually and entirely unfair. Even moreso that the games won't show up in the search again. Such things are definitely reversible, but only if the company in question wants to reverse it, which is bullshit.