depends on which ones, niche subs on reddit arnt found on lemmy sadly, and some are barely posting. i think by now you can guess which communities tha tpeople have come from, are the ones that were banned in large numbers.

mainly politics, news, reddit, tech,etc. i would avoid any conservative subs, or any subs that very biased to one extreme.

We are still pretty small (but growing!) so keep in mind more niche or focused communities may be less active. A common example is posting in a game community (like !games@sh.itjust.works) instead of looking for a specific community. However, if you’re dedicated and could post a few times a week you can make your own community and people will come.

The best resource for looking for communities is still Lemmyverse as it tracks all communities (your instance search will only retrieve results from its users subscriptions.