Here are some of the groups and artists I like:
Tangerine Dream
Klause Schulze
Micheal Hoenig
Edgar Froese
Peter Baumann
Chris Franke
Manuel Göttsching
Kevin Keller
Michael Garrison
Ash Ra Tempel
Jan Hammer (his first solo album is pure EM.......... no fusion at all)
Synergy (basically Larry Fast)
Yanni(I know, but the first two albums are very good EM before he went all fluffy)
Jean Michel-Jarre
Vangelis
Kitaro
I mostly like the 70s stuff from these artists that are from the 70s, though they have put out some good 80s to modern day stuff.