Looks like a juvie RD/Midas to me. Maybe it'll go red/orange, maybe not.
My 3 RD/Midas fry (who look primarily RD) looked just like this when I bought them, one of them didn't go orange till almost 6".
Two of my midas were barred when I got them and they're both O forms - one of them is just starting to change color at 3".
I've been able to tell only subtle differences between the two and that would be that the "rd's" pattern when young is emphasized on the lateral spots in the middle of the bars, the bars fade or get bolder with mood. The lateral spots are usually more easily seen.
On my midas their bars were bars. Even though I could see the the lateral spots in the middle of the bars they were never much more obvious than the bars themselves.
That's just something Ive noticed though, could be coincidence.
Maybe it does have some FH blood in there or is a hybrid of Amphilophus x whatever but IMO it just looks like a juvie RD/Midas.