I'm still running an m230 on the rear. They are of course not as strong as m231 but then they are lighter. They're both quite poor rims but that mainly because of the funny angled small braking surface.
My lightest front wheel is my oldest.
A hope 'original' which became the lightweight but with chunkier flanges.
Wheelsmith DB spokes, assume normal 2/1.7 not lightweight 2/1.5 versions with their Alu nipples
Arays RM-395 Team. (Not the team-xc)
Much better rims than the Mavic.
32 holes.
Hits the scales at 660g. You can drop that a bit with 2/1.5 spokes if you want or 28 hole.
Would be 40g-80g more for a suspension style hub or shimano xtr/xt.
Rear, Ti-glides varied in weight, earlier are lighter on my scales, through the Years it seems, also not the lightest of hubs.
It's the 4 bearing races that are it limiting factor.
They're about the same as XTR M950.
Depends what you are looking for in the wheel.
Just rummage through the weight section and stick one to get her and then get DT Revs with Alu nipples, these where available in the early 90's... Just.
For the rear I would say sub 1000g and if you can hit 950g thats good.