I've made quite a few tri-lams, some as heavy as 110#.
I've used ash, maple, and hickory as backing woods.
I've used bloodwood, purpleheart, osage, wenge, jatoba, and bamboo as mid-lams.
I've used osage, yew, bloodwood, yellowheart, and ipe as belly woods.
They've all been 74-80" NTN, with narrow profile stacked belly profiles, and mostly tillered full compass.
I'm sure there are a few other combos, but these have all worked relatively well for me.