I can’t contribute too much as Lemmy is as alt as I’ve gotten, however I don’t object to youtube the way I do Reddit or Mastadon. YT will step on toes because it’s a massive company, but it facilitates the livelihoods of tens of thousands of creators in a way that the rest don’t AND it sold out so long ago that it’s not a risk of VC cancer in the way the others are. 2¢

Discord = Matrix

Funkwhale is worth checking out. It’s a music/audio streaming service, similar to Soundcloud for example.

https://funkwhale.audio/

deleted by creator

I have no experience with the commercial platforms, but good experience with Friendica (some say similar to Facebook) and Foundkey / Calckey (I wouldn’t know that there is a commercial counterpart for this, is also microblogging like Mastodon, but with more characters and more features). Many also recommend Bookwyrm (similar to Goodreads, content can be imported) & Owncast (video streaming).

Spotify = Funkwhale

Twitch = Owncast

Facebook Events = Mobilizon

Those 3 communicates through the fediverse.

(Also try Calckey instead of Mastodon. Really more practical, IMHO)