Doctor Mario CG guide
Ganondorf Chaingrabbing guide
Magus has a .txt/post with Peach's CG's on FFers, I'll look for it.
If you're interested in Directional Influence, it can change the trajectory of an attack by
+18 degrees from its original trajectory, if you're using perpendicular DI. In some cases you can't get that much due to the way notches work on the control stick, however. You can use
MasterHand to find the original trajectory of a hitbox/throw.
Do keep in mind that many vertical CGs actually last longer if they're DI'd horizontally, and that DIing horizontally is better for lower %s in the CG because of the frames required to catch up (Dash+JC Grab), and that no DI is better at higher %'s because of having to wait for them to fall within grab range (and so being able to get out of hitstun).
Another thing to keep in mind that I think Magus might mention is that throw release point for ground-bounce throws like Shiek's Dthrow, Ganon's Dthrow, Doc's Dthrow, etc. for whatever reason changes slightly based on port priority and so can change CG percents by a % or two. Really stupid lol.
This thread has some information about throw release frames and endlag and such, which could aid you in your efforts.