Are you floating flop with KQ/AJ/AQ type stuff and taking this line?

I'm trying to get a sense of where AK falls, amidst your range. Sounds like you have very few pairs taking this line. You maybe have 9Ts/JTs (~4), perhaps some 99 (~3)? Some TT (~2). Some FDs (~10), AK (~10), and maybe even AQ/AJ (~5). (assumptions are discounting based on frequency of taking this particular line)

Total combos getting to river like this ~ 34 combos.
Need to call with top 61% for GTO - so top 20-21 combos.
This would include TT (2), 99 (3), Tx (4) - and yah appears like most/alll AK should be calling for appropriate defense.