I3wm was my choice of window manager as it was easy to config and simple to use
The config files are avalible on my github.
I picked rofi, feh, picom, kitty, polybar, dolphin, i3lock, pactl and playerctl as these all work well across devices and are also easy to config.
Making the configs easy to install and setup as most are modified defaults.
Using arch and I3 means that my system sits at low cpu and ram usage - at idle sub 2% cpu and about 1gb of ram usage.