duggeh: a lot of what you mentioned is more so ambient based, not lounge
JaGWiRE: some artists i'd recommend...
1. Thievery Corporation (lounge, a tad trip hop (maybe), some chillout, downtempo, a tad bit of ambient and some dub influences)
link:
Thievery Corporation
2. Cafe Buddha - The Cream of Lounge Cuisine (it's a compilation of various artists, but lounge music nonetheless)
3. Claude Challe & Ravin - Ethnic Lounge/Nirvanesque (it's two cd's...some lounge, some downtempo, some "ethnic/foreign instrumentation" etc)
4. Zero 7
Zero 7 (they've got a new album out btw (haven't heard it yet and seems that's all that they're allowing to play on their site), but try there album "simple things" first
5. De-Phazz
De-Phazz
6. Planet Lounge - Nazim
Planet Lounge Info
also check out the site
Properly Chilled it's downtempo music, some trip hop, some chillout, some ambient, some ethnic, some lounge etc just click on some albums and titles that sound interesting you'll be able to get a good sample of what artists are like, they also have theievery corporation on there
*i should also mention that my favorites out of what i listed are thievery corporation and de-phazz...hope that was some help