Revolt seems like it would be a good replacement if it gets to a stable point.
Other than that everything else is nowhere within miles of being a discord replacement. The best option IMO would be a regular chat server like Matrix/Element or something, and Teamspeak or Mumble for voice. But you won’t have streaming, screen sharing, etc.
Everything like Element, Jitsi, and so on are replacements for stuff like Slack, they don’t have easy to use voice rooms or streaming or anything like that.