I agree, there are many interesting prospects in the mid 20s to mid 30s going by ESPN mock, which is usually the most reliable resource for this kind of projections. Not perfect, but should be reasonably close. From the 20s on:
23 Nique Clifford
24 Maxime Raynaud
26 Yaxel Lendeborg
27 Rasheer Fleming
28 Noah Penda
30 Cedric Coward
31 Drake Powell
35 Ryan Kalkbrenner
51 Tyrese Proctor
I like a lot of those guys, in terms of profile and fit, most of them are productive, can shoot and defend, and I don't know that there's a huge gap between them and those mocked at 14. Personally, I have Carter Bryant as my first option at 14, but if he goes a couple picks earlier and you need to trade assets to move up, it might be a better idea to just roll over 14 and package a bunch of 2nds plus something else (say, eat a bit of money) and draft a couple of guys from that range. Harper plus whatever combination of 2 guys from that group and I'm pretty happy with that.