I have not heard of a new one that I never knew of before: LBRY: https://lbry.com/
Dlive seems to be working on BitTorrent – the Torrent method of sending data is excellent. Its tried, tested, solid and secure. You can read about it here: https://reclaimthenet.org/dlive-joins-bittorrent/
But Dlive does not seem to be a "library" like Youtube or Bitchute. It seems to only really do live streaming, which is a bummer.
If anyone has knowledge or info on D.Tube, I would be grateful. I placed a few videos on it but was not impressed. It looks cute, but I’m not sure if it works and if people go there. That’s my concern.