I do not know if I understood correctly, anyway:

-The list of names is very short, so I'm going to expand it.

-Weird because this mod doesn't modify the game interface. I will see that.

Update:
After some mod inspections I found the issue on my side. My bad, sorry.

I didn't activate PD, but have seen the other planets greyed out on species setup, so I thought I had activated it, what I forgot in the haste. Now with PD active, all planets are open to choose from.

So, the issue is the total opposite, from my OP. You have to mark PD as recommanded for your mod. Probably you should test it yourself, as I am playing with a mix out of ~120 mods active.

As for the namelists, I switch toward XCyberKhansX list to avoid that issue with random generated shipnames to be taken with your list.

A new issue appeared:
I started with my hive planet (origin mod) and also other starting planets, but only 2 pops (some starts only 1 pop) are present and after a day all installations are wrecked. Can't say which mod this is causing. Probably it's a feature of your mod I didn't get?

one of the room pictures is way too small...

So......
#1, Does this require a specific load order for the Gene modding to work proper?
#2. Does this need something done to make Gene modding work before ascension perks? (at the moment three of our games have tried Ascension gene modding with Xenomorphs all have failed)

So confirmed, There is an issue with Gene modding xenomorphs, it will simply not work