Looks like OE retainers to me.
I’ve never run into a problem with factory retainers contacting factory rockers with fairly substantial above seat recession problems.
The springs appear to be larger than OE springs. Probably Comp 901’s.
On the side where the flat is hanging out past the retainer, it should be pretty easy to verify if there is interference or not.
They would be closest when the valve is fully closed.
As the rocker starts opening the valve, the clearance increases.
I can’t tell from the pics if those are OE rockers or aftermarket stock replacements.
