Thanks for posting this. I actually read through that thread a few days ago but intended to post it here.
While I am thinking about documentation, here are links to several sunfish hybrid studies.
Culture & Propagation of Sunfish & Their Hybrids
https://dr.lib.iastate.edu/entities/publication/6d425c79-50c1-453c-afb8-7ab87fd560d2Hybridization of 4 Sunfish Species
https://iopn.library.illinois.edu/journals/inhs/article/view/165/125