If you can't remember the things you subscribe to does it matter if you don't find an equivalent here? You could search for the ones you do remember/like most to subscribe though.
I admire your commitment comrade but unfortunately voat is nothing like reddit and very few subs are equivalent and even fewer are active. Time to start fresh.
[–] russelln ago
Just go look at the subreddits you're most active in. (I think it shows a Karma breakdown by subreddit on your user page.)