Hi!
Unfortunately this is only possible with terms within different taxonomies. The display mode can be changed, but for taxonomy groups only. (Frontend search settings -> Category and taxonomy terms panel -> Change display mode button: https://i.imgur.com/mN2ziAN.png )
I wish there was a minor modification I could suggest for this, but it’s much more complicated than that. I’m not sure if such feature (display mode per parent-child terms) will be implemented, as mixed displaying of items within the same taxonomy group would create massive connection logic related problems. I recall one other person a few months back had a similar request, but we could not make it work either.
Best,Ernest Marcinko
If you like my products, don't forget to rate them on codecanyon :)
