For a long time I was mainly a Deb user but few years back did the cross over to Arch.
Currently in my spare laptop that I use for light usage and travel, I am running 2 different Arch Based distros in a dual boot setup:
Main OS and Secondary OS difference is just when I first installed what. Aside from that both share same drives etc, just some slight different programs between both Distros.
If you wish to get into Arch, start off with EndeavourOS and then move to ArcoLinux. ArcoLinux website has a lot of valuable information.
Main OS -
ArcoLinux (ArcoLinux XS + LTS to be exact which is ships with LTS Kernel) with OpenBox as main WM but with Qtile and XFCE available as well (XFCE was the default DE).
One other thing that I am running is Z shell(Zsh for short) - in specific Oh-My Zsh.
Secondary OS -
EndeavourOS with Qtile, OpenBox, XFCE, LXQT and good old LXDE flavours (depending on my mood) - Started off with Qtile but in parallel installed individually all the other flavours to grab their configs, themes etc and then customized the main installation.
Using Fish Shell here but might switch to Z Shell.