you have to BYO some of these utilities, udiskie for external drives, ibus for keyboard layout. Stuff like wifi should be part of your init system, for me connman runs at start up no matter the WM.
Yes, I understand, but I've searched for this before and it is hard to find a list of the utilities that people typically use with i3wm or any other barebones window manager.
IME it's a process of "oh, I wish this happened" and then you search the arch linux wiki :)