Hmm... Its been a while since I've had to look at these but from memory I think it looks like this...
STL, ETL-HR, ETL-GE, ETL-HL, ETL-SL, ETL-LOG
GSTL (2), CTL, HLTL (3?), PTL, SLTL (2), PATL, Flow TL, Log TL
I know that D-Volume has an STL-GE, C-Volume has a SL/GE, so Org 3 is where it should be split into all different ETLs... I think there are 3 HLTLs from what i can remember, and it stays that way for a few Org Charts...