There's Golden Eagle. If you give them enough money I bet they'd make up a new one beyond thatI got to Benefactor member several years ago...
AFAIK, that's the top tier of membership.
I suckered myself into Endowment a couple years ago.
I'll sell you a keyboard with a working space key for $5whopissedinyourwheaties areyoujoiningsitesanddigginupoldthreadsjusttoflametheNRA getafugginlife