2015 RT 5.7 M6
No I hear you about possible differences in years but without people posting their logs we will never know.Just looking at your revised list, I noticed that Chassis Type 44 applies to both an SXT and R/T, both w/o STP. I know that in 2015, the the R/T was just a package on top of the SXT so this makes sense. But it also makes me nervous that in later years it might have changed. Or it stayed the same and they just marketed the trim levels differently.
Just a thought.
But check this, a non-STP 300s is chassis type 25. I guess since we kind of have the range of numbers one could try running through them until the ABS module is happy.