I know people here are big into the really wild stuff, but some of my favorite music has actually been more in the soft rock category. We're familiar with AOR as in "Album Oriented Rock/Radio" but AOR to the Japanese means something different, that being "Adult Oriented Rock". This is like a conglomeration of soft rock, r&b/soul, jazz, bossa nova, and funk.
Some compilations I've found from Japan are ones like "Cruisin" which features selections from Rupert Holmes, Toto, Chicago, Kalapana, Michael Jackson (early stuff), 10cc, and some others you may or may not know of like Airplay and Jay Graydon's work. Some Japanese artists in the genre that I really like are Ginji Ito, Junichi Inagaki, Akira Terao, and Omega Tribe (all three incarnations). I think even Michael Franks would be lumped into this category.
I guess you could say that this definition of AOR is kind of like adult contemporary from the late 70s/early 80s.