I just want to point out at least a few of the measurements in the top list are wrong. When you measure the effecting length of a lower control arm, it should be from the middle of the ball joint, the the middle of the bolt hole. The pivot point of the ball joint can't be measured exactly, so you have to imagine where it may be. Move the ball joint around a bit so you can get a better idea of where the centre may be. After doing this, I think the list would look closer to this:
RA23/28, RA40, RT132/XT130 (all the same part) 300mm
KE30, KE55 etc 300mm
AE86, TE72, KE70, AE71 290mm
I still need to measure this better.