I'm trying to help new people, and most new people are entering the Fediverse via Mastodon (and a lot on Pixelfed right now too).
But I do post about other platforms too, I have an account dedicated to PeerTube & OwnCast at @FediVideo and a website at https://fedi.video
I have an account dedicated to Pixelfed at @PixelfedHelp
The list is of instances that commit to rules at https://fedi.garden/about-this-site
If you know other instance that follow these rules, let me know.