I think the tier 1 CB's are Kelee Ringo, Joey Porter Jr., and Christian Gonzalez for their size, speed, experience and productivity against excellent competition. The knock on Ringo is a lack of experience and his tendency to get too physical, though in today's NFL it seems CB's can maul receivers. Except Steelers CB's so there's that.
The next tier - and it's close between these tiers - consists of Devon Witherspoon, Cam Smith, and Emmanuel Forbes. The three are experienced, skilled, with really good ball awareness and excellent quickness/speed. The reason they don't rate as high as tier 1 is the lack of size. All three weigh in the 180's. It is what it is.
Any of those six would be a candidate to play a lot in 2023. The next tier is going to have players who are more projects, like James Pierre. They could turn out - like Pierre - to be quite good but that process will take a couple years.
Branch, by the way, is awesome. Absolutely superb in reading the QB in zone and breaking on the ball. He played slot defender a ton to take advantage of his blitzing abilities and was excellent. I just don't know if he is a CB or a S. He rarely played on the outside so listing him as a CB is not clear. Really I think he excels at free safety and the Steelers reportedly have a guy there already who is from Alabama and apparently pretty good.