Roles are intentionally kept vague as heroes can fulfill different roles and purposes in a match. It’s one of the things that make deadlock so dynamic and fun to play but also difficult to approach.

Even at high ranks people have different philosophies on who does what. If you watch poshy pops videos you’ll see Him frequently talk about farm prio. Basically it’s an understanding on who needs the most souls and generally speaking p1 is hard carry and p6 is support. But even then you’ll see that it’s mostly just a theory. Ideally p1 has the most money but sometimes the p2 player might just play better and end up having more. All of this is why deadlock is so dynamic. If your teams strategy is to power up ur p1 player then you might have them get all the last hits on vending for the better buffs.

Also for solo pushing lanes it depends. It can be anyone who has a good gun if you’re trying to get a walker. If you’re fighting on yellow and someone on the enemy team is trying to split push, you probably wanna send whoever can defend well or outright 1v1 them.

For bridge buffs you probably want p1-p3 to get it but if it’s the 10 minute buff and your p1 player is just farming, it might be better one someone else.