Post #41 has the part numbers listed:
https://www.tahoeyukonforum.com/threads/rst-black-trim.101388/page-5
I do know of at least (1) that has been discontinued for the LWB models (Suburban, Yukon XL, Escalade ESV) and I believe it is GM OEM Part #84126996.
If you go the route of replacing the window trim you will also need to replace the gloss black front and rear door appliques as you will have to remove them to replace the window trim and it's pretty much impossibly to remove them without damaging them.
These are the GM OEM Part #'s for the K2XX LWB Models; Suburban, Yukon XL, Escalade ESV
Left Front Door Applique | 84263144 |
Right Front Door Applique | 84263145 |
Rear Driver Side Door Front Applique | 84263146 |
Rear Passenger Side Door Front Applique | 84263147 |
Rear Driver Side Door Rear Applique | 84263150 |
Rear Passenger Side Door Rear Applique | 84263151 |