This is what I've found on a related search at Arrow.com:
- https://www.arrow.com/en/products/xhp50a-01-0000-0d0uf235g/cree F2 35G.
- https://www.arrow.com/en/products/xhp50a-00-0000-0d0ug435g/cree G4 35G! Had to order two of these :-) sorry, it still says in stock.
- https://www.arrow.com/en/products/xhp50a-01-0000-0d0uf240g/cree F2 40G.
- https://www.arrow.com/en/products/xhp50a-00-0000-0d0uf440g/cree F4 40G.
- https://www.arrow.com/en/products/xhp50a-01-0000-0d0uf250g/cree F2 50G.
- https://www.arrow.com/en/products/xhp50a-00-0000-0d0ug250g/cree G2 50G.
- https://www.arrow.com/en/products/xhp50a-01-0000-0d0ug20e2/cree G2 0E2 (this is 2A/2B/2C/2D).
Interesting. :-)
Cheers ^:)