I've noticed many of the S'pht terms from M2 logon with a mash of text that contains a S'pht clan name. Many contain "Mnr," but there are others, for example "Rr2Shr9<995.52.194.63>" may be written by the S'pht'Shr, and "dizzy.frow.5.63.Nma.23.1" may be written by the S'pht'Nma. Here is a list of what events may be attributed to the different clans, based on these logons/logoffs as well as what's written in the terminals themselves.
S'pht'Lhar ---- defenders in the civil war
--------------- fought the Pfhor after the clans unified
--------------- tens of thousands taken prisoner by the Pfhor
--------------- released the S'ct'lac'tr
S'pht'Hra ----- destroyed by the Pfhor before the clans unified
S'pht'Nma ----- fought the Pfhor before the clans unified
S'pht'Kah ----- witnessed the Pfhor retreat and bombardment
S'pht'Vir
S'pht'Yra ----- witnessed the capture of S'pht'Lhar by the Pfhor
S'pht'Val
S'pht'Shr ----- captured and dissected some Pfhor
--------------- witnessed the Pfhor retreat and bombardment
S'pht'Mnr ----- aggressors in the civil war
--------------- witnessed the S'pht'Kr's departure
--------------- fought the Pfhor after the clans unified
--------------- tortured by the Pfhor (Questionable Surgical Procedures)
S'pht'Yor
S'pht'Kr ------ we all know about the S'pht'Kr.
I am making an assumption that "Yr-c" refers to the S'pht'Yra. With that, only the S'pht'Vir, S'pht'Val, and S'pht'Yor lack any reference that I can find.