I'd guess 25% Republican appointments, maximum.
Surprisingly, the number is or was much higher his forst couple of years,, then he caved like an old beer can.. He can still veto the stuff he vetoed before and credit to him for that at least but this is no time to go down the partisan road, we see what dems&libs do and to only further ingrain them into places like the courts as well as universities and colleges, well.. nuff said