Any recommendations would be greatly appreciated. For the Calibrators out there - would be happy to pay a "consulting" fee for your input.
You've specified a monitor, but it's worth saying anyway that the general rule of thumb is that it's difficult if not impossible to find a high quality "TV" in small sizes. So you're right in limiting your search criteria. Every manufacturer seems to think that if you're going to spend money on something that you also somehow must require size, and that's always been a broken notion.
IF what you want is truly that level of configuration, then you'll have the most luck looking for a computer monitor I think. You might or might not need to look for some kind of studio reference monitor. And you might need to ask a calibrator. There is a Display Calibration forum here, but I can't for sure if they are the folks or not....they'll tell you quickly.
BTW, I think folks here (myself included) can get overly pedantic at times. IMO, your question allowing the inclusion of OLED options is fine and this sub-forum is indeed the place to ask. Put OLED in top-most post.