My Kinesis has the top row 'OEM' profile keys for Ctrl, Alt and Windows keys. I find them to be too high. There is more wobble and more friction on off-centre key presses.
I have some vintage Cherry keys with row A profile, and I find the front edge to be too high and too sharp. By the way, the figure shows the space bar on row A, which has a smaller and more round profile other other keys. I have filed down a row A key to match the space bar, so I know what I am talking about.