Gonna put this here for anyone else that runs into this problem in the future, as I could find next to nothing on the internet about it.
The threads on the factory 10-bolt/Dana 44 lug studs are only 1” in length, which leaves less than 1/2” … or 4-5 threads of thread engagement when using the thick aluminum wheels. Not acceptable for my risk-adverse soul.
Pictured below are a couple sample studs, with one painted that I then mounted in the wheel with the nuts I’ll be using to test thread engagement.

That’s is the Dorman stud part number ending in 180.
Using Summit’s website with their excellent filtering options, I was able to search other options and came down to one, that is, if I wanted to maintain the 9/16-18 thread pattern, which I did.
Dorman part number ending in 419.
It’s a Ford stud. Everything is near identical: shoulder length and width, knurl width and placement (placement is really important - The knurl needs to grab the hub AFTER going through the rotor, so it needs to be at the top of the shoulder, not the bottom) and the thread length is about an additional 3/8-1/2”. One major difference is that the top of the shoulder on the 419 does NOT have a taper like the 180 does, which helps the shoulder to get started into the hub. Good thing I have a bench grinder.
Popping the old studs out with the press was easy. Popping the new ones in is a bit more of a challenge because there’s not much room to center the stud under the press with the arbor plates once the hub/rotor assembly is flipped upside down. That’s where the old rotor comes in handy.
I’ve got 3 in now, and I’ve tested the thread length on the wheel and the new studs are not too long, but I imagine I’m darn well maxing out the available threads on the new studs. I’ll do another paint test during lunch and post up the results.
Andy