ok just wondering if i have these right (auto transmissions)?

first gen:
th125 no electronic control(tourqe converter lock up?)
bolts to 2.0, 2.2, 2200, 3.1, 3100, 3.8, 3800

second gen:
th125 then switch to 3t40(electronic with lock up converter)
bolt pattern the same

third gen:
3t40 for the 2.2 and 2200
4t40e for the 2.3/2.4(different bolt pattern)
also 2.2 and 200(another bolt pattern same as 3t30)
and ecotec(yet another bolt pattern)

just pondering ideas and didnt know if i was pondeing with the right facts. also do these all have the same mounting points on the trans itsef?