I vote for Brahmas. They are the sweetest roos I know of.
I'd be leery of EE's. I've had many EE roosters.
I've been attacked several times.
The two I have now have not attacked yet. But they do follow behind me from time to time and I peek back wondering if they are stalking. lol. I'm always watching.
Just for information. I haven't seen many protective roosters. Sure they will keep a look out and throw a fit, try to alert their hens. But when it comes right down to It....
I had a rooster and 8 hens go out in the woods. The rooster came back unharmed. Yeah. It should of been a hen coming back, or at least the rooster should of looked like he tried to help.
I've also had predators get in the coop, and several hens killed, while the rooster sits and watches.
And I've had a lot of roosters. One of my EE roosters, defended his girls. But he was a rare exception in my opinion. He has passed on now sadly.
Moral is, most roosters will be sweet, take care of their ladies. But they are just the same as a hen against a predator. They want to survive too. They may puff up, threaten, but they won't attack a predator nor sacfrice themselves for the hens. Just saying.
There are some out there. But you are lucky to find one. Good luck. I am the same way. I feel all hens should have a rooster with them. Just for peace of mind. Even if I don't think they would stop a predator. At least there is a chance. lol. But I would just get rid of the rooster.
I have found RIR to be spazs. The hens are nice enough and friendly. But as chicks they are really agressive, and bold. I don't think I would have a RIR rooster. I would be scared of turning my back. lol. But again there are exceptions.