From the pictures they look to be projector lenses. I've always been a fan of projector head/fog lights versus reflector. They do a much better job with concentrated and intense lighting. The 21+ GM SUVs all use LED reflectors with the Yukon also having LED reflector fogs. For '25 the Chevy and GMC models go to LED projector head/fog lights.
FWIW - the IIHS tested the '21 Tahoe and one of their test criteria is headlight performance. The Tahoe headlights received a poor rating. They haven't tested the Yukon, but I own one and honestly they are not impressive with their light output. Very similar design, just different aesthetics from the Tahoe headlight design. It will be interesting to see when the '25 platform gets on the road and starts getting reviews, but I'll bet the head/fog light performance will be improved just by the change to projector lenses alone.
2024 Chevrolet Tahoe 4-door SUV - large SUV
www.iihs.org