i keep clowns loaches with amazon sword, dwarf hair grass, red temple, sagatteria, narrow leaf sword, java moss, crypt, and val. i have no problems at all.
I have also kept them with wisteria, cabomba, fox tail, ludwigia amd many other plants with no issues.
Also have kept and still keep yo-yo, sidthimunki, dojo, angelicus, kuhli, and dario loaches with plants. and have no problems