Desktop: Waterfox, Ungoogled Chromium

Mobile: Ironfox

On the desktop, I moved from vanilla (but hardened) Firefox to Librewolf to Floorp and then to Waterfox. Ungoogled Chromium is for the times some stubborn website refuses to work with Firefox (and its forks). For mobile, I only have Ironfox and if websites don't work there, I just get my ass to the desktop.