If we include solo material, Richie's albums would be my list. But, barring those:

The live album (very poorly put together and a major disappointment)
The Circle (topically dated and too much political content)
What About Now (I liked it at first, but listening to it brings up the feelings associated with everything going on with the band at the time, so I just let it rest. And it's a lot like The Circle part 2 to me)