For other Fediverse software:

• Misskey is unmistakable which already makes it a good name
• PeerTube is on par with YouTube and is perfectly transparent as a description of software: “YouTube but with P2P”
• Writefreely is another clear but already proper name, definitely better than Medium or Substack (ony Medium’s advantage - it sounds better in non-English languages)
• Loops and Friendica remind better of their purposes than TikTok/Vine and Facebook
• … on the other hand, every Threadiverse app, no matter if it is /kbin, Mbin, Lemmy or PieFed, fails with it