So I think I have noticed a pattern here but feel free to jump in if I am mistaken. I noticed that it seems each of the DLC teams that get released all fall into a “theme”
T4 seemed to be the outcasts/recluse team. These were people living on the edges of Society. Slim was hiding out and Crow was in a sort of self imposed exile. Torvald was found by Sunny who was thought to be dead. Torvald and Slim see themselves as so different that they have trouble relating to others. Crow just seems like a loner, similar to Maggie. Sunny is really the only one who doesn’t fit this bill too well. The only possible thing I can think of is how young she is in relation to the others. That could make her a little bit of an outcast, but she actually enjoys people.
So far, when looking at T5 we have Lennox and now Jack. What we know about them both so far is that they were both already on Shear. Lennox built her Thunderchild from scavenged parts and Jack survived on Shear scavenging through the scrapyards. So far both Hunters seem to have been very resourceful and have built their arsenals out of whatever they can find on Shear. Use this info for the speculations!
T4 is the Outcast team
T5 looks like the Scavenger team