PeerTube

Unsure on the creator side of things, but besides PeerTube, which uses ActivityPub like Lemmy/Mbin/PieFed, looking at Grayjay's sources list, there are some others, like Rumble, Odysee, BiliBili (Chinese), Nico Nico (Japanese), Dailymotion and Bitchute. Maybe a start to check?

If you are trying to get monetized, make some $$, a lot of creators are using Youtube as sort of a cross-posting system, ie edited or partial content so they won't get a copyright strike, or offend the fascist YT censorship, then in the video reference your Peertube/Odyssey/Rumble for the full version. It helps also to transition or train viewers on alternative platforms.

So far i haven't come across something better than odysee. It has a community, but like most alternatives for larger platforms, the userbase is smaller, and often times i'll also find some unhinged conspiratorial comments on there that are kinda off putting to me lol.