Trilogy cover feedback?

I’m just about to finish writing the second novella in a trilogy that I plan to launch serially on royal road and as a podiobook on most podcast platform come the first of January.

Right now I am going through and getting some cover sets built to do split testing with.

This is just one set of podiobook and RR covers but I would like some feedback in the form of:

• How to properly split testing the variations that I will have shortly

• What genre do you think this trilogy is

• What kind of story do you think this is and what might be some comparable titles.

Blessings!