A lot of the broader interest subs I followed have either migrated over or have local equilvalents.
I had a couple niche ones I miss. I work in hospitality so talesfromthefrontdesk is definitely one I miss, and I haven't seen a good version here as of yet.
Specific game subs are not as popular here yet, but honestly I am not sure how much I really need that. Rimworld is probably the only game I keep coming back to often enough to justify it, and I largely use discord for that. Only thing I use discord for really.