Oscars do fine as long as they stay established as top dog in the tank and can use their size to bully other fish. The problem I see is when the Oscar tops out at 12" and a Trimac or Red Devil hit 14+, and have that nasty Amphilophus attitude, it's over. Oscars are brutes but compared to a fish like you have on your list, they fall short of the mark...by a longshot. Imagine what an 18" territorial pissed off male umbee would do to a 12" Oscar. It wouldn't be pretty.
And Prashan, Black Belts might surprise you. They can be very aggressive and get some serious size in the right conditions. I'm not sure I would dismiss them so easily. Of course a lot of it will come down to the individual but read up on them, some owners have some highly aggressive BBs.
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