andyprough
I know quite a few people that are using Waterfox these days, seems to have had a resurgence in popularity due to various Mozilla blunders.
Another couple to consider are Firedragon, a Floorp fork which supposedly has Librewolf privacy settings, and Mullvad Browser, a Firefox ESR fork which claims to have Tor browser privacy settings. I’ve been trying both lately, Firedragon seems fast like a fast chromium browser even though it’s Firefox based, and Mullvad browser has all my preferred privacy settings by default.