Light, strong, stiff and cheap. Three are possible, four is going some.
LB rims allow you to run Revolutions and still be stiff. With a decent hub like a DT240 or AC, 32x and alloy nipples they come in at high 1300s/low 1400s. They are noticeably stiffer than my training wheels which are
Hope Evos with Crests, Sapim Dlights and alloy nipples for about 1600ish. You could substitute the rims for something chunkier but you’ll be knocking on 1750?
I presume the Mavics manage light and stiff on alloy by virtue of fewer but stronger straight pull spokes at massive tension. Cost is over the lifetime of the wheel and personally I’d not go there.