Steamer etc. all know how old he is bro
You can tell a lot from 400+ MLB PA
Colt Keith is a decent player and would be a nice piece to have but under the hood he doesn't look like anything special. His barrel and maxEV rates are kind of in that slop where some good hitters exist (like Bregman, Semien) but lots of guys with no punch live (Benintendi, Josh Rojas, Leody Taveras, Gavin Lux, Jose Cabellero).
His BB/K ratio is middling.
Power is middling.
Defense isn't an asset.
So it's a good (not very good) ability to make contact coupled with average power and easily replaceable defensive utility. That's the package!
You can very easily compare that total package to Horwitz and Clement. They are older, but Clement has a way better contact ability and Horwitz has a better eye. Clement also has more on the D side.
This happens all the time where certain types of young guys look like great prospects in MiLB but they aren't as good as expected in MLB. At least Keith is still very likely a solid MLB player. Alek Thomas' first 400 MLB PA at age 22 showed exactly who he was, in hindsight.