What size tank?
I would recommend bringing up the numbers of your existing fish before adding other types.
A pair of angels, and at least 6 each of the boesemanis and corys. Assuming you have a big enough tank.
Because even without predators shoaling fish will be stressed if they arent kept in sufficient numbers. Stressed fish result in unhealthy fish. Also, they wont show their natural behavior.40 gal
What’s the point of a shoal when predators are absent
Its what angelfish do.Had 3 angel had to keep one too much badgering with 3 or two