Thinking of adding more schooling fish to my 55 gallon?

Currently, in my well established 55 gallon community tank i have

5 striped kuhli loaches for my bottom dwelling fish, a pearl gourami (full grown 6") , a rescued honey sunset gourami (about 2"), and a school of 6 red minor tetras. I love my red minors, and was thinking perhaps i might want to add some more of those or maybe some different schooling fish? I like the color/interesting fins of the minors.

I have a 110 gallon filter, a volcano aerator, and another aerator( a bright pink coral ) haha i couldn't resist! My tank is heavily planted with plastic and silk plants with a few caves here and there for hiding places. The tank stays in the range of 74-76 degrees Fahrenheit, with all water parameters right where they should be.

What would you guys suggest for/ add to this tank for interesting schooling fish?

All input is appreciated thank you :)