I’ve been wearing a russell super elite 3 since they were first available. Since they quit making them, I have acquired two more in good shape. They don’t have the bladder pouch in the rear, but other than that they are perfect to me. I wouldn’t be the best at keeping the bladder pouch clean and sanitary as much as I hunt, so I carry a big Gi plastic canteen and it works well.

Nomad makes several that would probably be along the lines of what you seek.