How many unique participants?

I've been eyeing TLR on PlayStation 5. I know there was a big thing on the original Xbox game where you could only put the unique characters in the leader role and had to use the mercenary style soldiers to fill out the rest of the unit.

This did not work that way on the PC version I played much later, and you could fill whole units with unique characters.

Does the PS4/5 remaster version work like the original where you can only use merc style filler for your units, or the PC version where you can fill your units full of the unique characters?