Maxle’s, Full Fat, Lite, Lite updated (12mmx135mm) can they be swapped about? My 5 frame came with a lite, i ordered an old style one, the one with the bit that sticks out on the drive side as a spare as i stumbled in some cheap, just wanted to make sure they are all compatible?

Can be swapped no problem, probably best to avoid the waisted lite though, leaves some hubs unsupported at a high stress point.