Ram/Dodge does not manufacture bearings, they are outsourced from the cheapest vendor they can find. So OEM in this case means nothing.
That's not a completely valid statement. At all. They probably do outsource the bearing mfgr as do most manufacturers, that part is true. But the rest isn't true. It's a common myth.
There is a Chrysler specification vendors have to meet. Not all vendors can meet that. Then only certain 'approved' vendors with known 'good' quality track records and financial stability are considered. Bearings are 'graded' after they are produced from lower quality to higher quality. The lower quality bearings will be sold off to other purchasers, the bearings which meet a certain spec can be used. I used to do a lot of engineering projects with Borg Warner for many years, and knew the plant mgr pretty well. We'd had many "this is how it works" discussions about how they go about making parts for new cars and pricing up new parts/components. Price is important but it's not the only factor.
If what you said was the case, vehicles would all be made from the cheapest Dorman and Chinese products which would have an astronomical failure rate (and customers wouldn't buy their products).
Even within any bearing mfgr's line, the same bearing part number there are various bearing grades and different parts associated with the tighter vs the lower grade.
Off-roaders know cheap bearing/hubs don't last. Compare a quality GM original replacement hub to even a good Chinese hub and the quality differences are rather stark. Last OReiilly's hub I bought (wasn't even the 'cheap' one) had .006" runout at the outer hub face out of the box. My brother has bought cheap hubs which had 'freeplay' after it was installed. LOL Your Timkin recommendation is probably pretty good, but they're not the 'cheapest' hubs.