lol, agree to disagree? look past the colour animal, its a low grade fader fh imo, the mouth is turned up (midas is flat/horizontal) the eyes are red (midas have blue/red mix 90% of the time), the shape at 7inch if thats correct is chunky like a fh... it could be a midas cross who knows but its defo not a staright midas, rd or md thats for sure. i dont think its worth the money obviously. im am pretty clued up on the midas/rd group, i would put a huge wager that it is not solely of the same group like the op suggested.
amphilophus covers alot of fish, im assuming you only mean rd/md/midas or else you would be including flowerhorn as flowerhorns were made from trimac crosses originally wasnt they?-)