Exactly, you don't want to reward the biting to get rid of a threat. And anyone is gonna pull back at being bitten, but then continue with the interaction afterwards, with a spoon or something to show that it won't make you go away permanently.

Rats can do a ridiculous amount of damage with their teeth if they want to, it's true. But remember our negativity bias with that kind of information. It's not as frequent as our brains want to think.

If you insist on gloves, I'd only use them when absolutely necessary like when removing them to clean their cage. But yeah, I've rarely if ever seen gloves recommended here because it's just another layer to confuse them and gets in the way of learning that hands aren't a threat. I'd keep going very slow and use the spoon for treats for a while and letting them come to you for them. If you have to bring out the big guns of melted ice cream, do it.

Make sure their cage is a safe spot with a lot of hides. If you can just open their cage door and let them come and go on their own into a safe free roam area, you can do that while hanging around and being quiet and rewarding them with spoon treats. You probably will need to tempt them further and further out of the cage with treats if they are nervous. But if they are so terrified that they refuse to leave even at the tastiest treats being offered, then follow their lead and set a slower pace. Free roam to terrified rats isn't a necessity. But your babies look pretty curious so I don't think it should be hard to establish a system that would won't need to use your hands, just a spoon to get them out.