Yeah it is a placeholder name. The game allows you to rename them yourself if you'd like, in-game, just like with any other hired gang member.

In my eyes though, I wouldn't know what to name them. I could perhaps look at randomly generating names but with how the configs for the game works it may be tricky to have the name change every time they die. (And that could mess up events if it happened too early) But the idea behind the mod is when they die, unlike normal gangsters, they become rehirable (So you'll never run out) and are therefore implied to be a different person. Therefore it'd be weird for them to have same name at that point.

It may be possible though to change the name when they die... (Or perhaps, maybe it'd be better to do on re-hire) In fact, I may have idea...

Right now, I can rename them, but it always renames all of them to the same name.

So I had one guy who was with me for a long time and somehow managed to not die, had a lot of notoriety and outranked several of the goons I hired. I decided to make him a "regular" member of my crew who I'd actually care about and give jobs to and all that. To make him more recognizable over the others, I decided to rename him Tom McDonough, but instead it renamed all of the Hired Goons to Tom McDonough, even the ones I had not hired and the ones that were hired by another faction.

Hm... now that's an interesting one. Good news is though I'll have my Master's soon and so assuming I don't move right on to pursue a PhD I should have a bit more time available in order to look at patching that.

Thanks for the report!

Update: I've located the cause and have an idea to fix it. Hopefully will get an update released soon. :)

Update: This issue has been patched!