SD_S17+ (not sure if it is for T17+ too).
Possible, but I have seen a T17+ recovery files that are different from the S17+.
Could be, will have to check with Taserz.
And T17 (not sure if it is for T17+ too).
absolutely not, the T17 and T17+ use a completely different control board, since the recovery firmware is MP_test which you later need to flash to the appropriate firmware I think that
S17e,T17e,S17+, and T17+ > could use the same files.
T17, S17, and S17 pro > could use the same files.
You are totally correct, T17 and T17+ are different files.
Also, I think T17 are different from S17 and S17 Pro, but I am not sure about this either.
What I am almost sure of is that S/T17e are different than S/T17+ in files but they do actually use same control board:
https://shop.bitmain.com/product/detail?pid=000201912301516442301jqzV9Ep06B6