from personal experience:
10 - umbi, dovii, trimac
9- midas,grammodes, flower horn
8- jaguar,
7- neets, salvini
6- texas,
5-jd, convict
4- firemouth, oscar
3- severum,
2- angel fish
1 ram, keyholes
If most of the above spawn then you could +2 to the ranking. Predicting cichlid behavour is difficult, all fish seem to behave differently, some known agressive species can be docile. with increasing size and mass the damage the fish does increases also some fish have very sharp teeth others do not,