The only one I wouldn’t readily show is the enforcer at least until the end. The poachers would be seen but they wouldn’t be immediately recognizable as Predators. The enforcer would look basically as it does in Bad Blood.
You’d be seeing things off in the distance or at night to obscure the creatures in addition to what’s going on with the character design. They aren’t supposed to be there so further changing the look is to hide them and help blend in. My idea is that certain technologies would have to be omitted like the mask since the enforcer could track them with that. So the “face” has to change for example. Keeping it Predator it would be some sort of bone mask but at face value the general audience wouldn’t start connecting the dots until it starts using its gadgets.
Presentation for me is that they look like people, albeit like demons or something. The Predator is humanoid in shape but we can’t loose the tribal look. So it’s bone armor, maybe some furs, with mounted gadgets. But things like the mask and wrist computer change to accommodate the threat of being found out. And at a glance people will freak out but aren’t going to notice that it’s a hulking alien. Like even hiding the dreadlocks, kind of like an armored hood like scales or an alien leather hide. That way if someone sees something in the distance it looks like some guy or something weird once they get a better look. It’s not perfect but I wouldn’t want to create a new creature, rather than change the theming.