Also consider subsonic cartridges that really SHINE in shorter barrels and with suppressors. I’ve fired some suppressed 10” 300Blackout pistols that are downright pleasant, while retaining impressive ballistics out to 300m.
Like you, however, I prefer to give my rifle cartridges at least 16” for the longer-range stuff.
If Trump manages to get suppressors removed from class-3 designation, a .300 blackout upper is in my future. I would have it in at least a 14.5 with pinned/soldered muzzle device to get to 16. I’ve played with one and it’s a very nice combination.