Could use some help identifying some roller rockers

Yes like was already said, you're missing a lash cap. What the assembler did was using his brain to make an existing setup work with the lower stem height. Those locks are designed with a recess so that the Lash cap just clears the locks and rests upon the tip of the valve. If the stems have been ground as well, which why in the hell would they in a setup like this, then it's possible that the last cap can rest on the locks instead and you do not want that. I have seen people face lash caps in situations like that so that they don't rest on the lock but there is not much room for that and now we're getting into Uncle Jeb's garage kind of ****.

The Rockers could be scorpions, or some knockoff like that. They don't look familiar to me but I don't mess with a whole ton of stud Mount stuff.
If the setup bothers you, you'll have to buy a set of longer stem valves to remedy it and if the seats have already been run in with the current valves.. you'll need to have those touched -cut/ground , especially on the exhaust side.