LED COB mounting bases

I’m looking at parts: CHA0410-0000-000D0H0A40G Cree LED | Optoelectronics | DigiKey and CHA0410-0000-000D0H0A30G Cree LED | Optoelectronics | DigiKey

I am trying to find the bases that they would mount into

Any help is much appreciated!

For the LEDs, I do not see that there is a base available for the parts. These are intended to be mounted onto a heatsink as detail in this document.

Something like BXRC-27E4000-B-73-SE Bridgelux | Optoelectronics | DigiKey
Where it has the white mount which secures the COB. I see what you mean now though with the heat sink, so It looks like back to trying to source something that will come with the mount for securing the LED