MX Linux (Debian-based, uses sysvinit with systemd shims) and Devuan would seem to be obvious alternatives that wouldn't require changes to your setup.
I'll check it out. I have all sorts of weirdness with this system. snap is great because debian doesn't package a lot, yet then all my snap programs are sandboxed in a non useful way. (like mysqlworkbench won't save passwords in a keystore because that hookup doesn't work - and it cant run without a working keystore. like firefox will start once, but if you run the firefox command, it'll error out that firefox is already) lots of annoying little things