Ok been doing some reading from various threads and these are some of my findings... Quite a few mentioned in the Edging thread
Baobao at Hougang
Sora (think at one of the River Valley Spas but not sure)
Vicky (Boon Keng but temporarily RTC)
Judy (recently moved to Upper Thomson from Edging thread)
Linda (from Edging thread)
Soda (Boat Quay)
A*(from Edging thread)
Sa (mentioned in Nuru thread)
Rose (JinYu Spa)
7P (from SLG)
TT (bro exchange123's thread)