Please take a look at these devices.
I think they shud be included your list.
What happens next, 2.3 or 3 comes out and this cycles repeats?
And Sony Ericsson will always be 2 versions behind.
Samsung will be 1 version behind.
HTC will be the most up to date.
Im sure if they give 2.2 to Galaxy s then more than half will be on 2.2
Mine is Eclair ;(