Probably an L1B LED like most other Toyota models.
GRC will use either Hyuga Yellow LED or IPF from RHDJapan
https://www.paledbulb.com/products/tf1-l1b-fog-light-3000k-6000k-toyota
https://www.rhdjapan.com/ipf-led-fog-lamp-bulb-x3-l1b-2600k-deep-yellow.html
Toyota just released LX700h
Hopefully GX info is soon
https://pressroom.lexus.com/taking-the-pinnacle-of-lexus-luxury-to-the-mountain-peaks-the-2025-lexus-lx-700h/
Brand new in the box set of four
Rays Engineering Gram Lights 57DR-X Bronze. 18x9 20mm offset 6x139.7 bolt pattern. Local pick up 91710. Asking $2500.
No wait!
Waited 10 months for these.
One box opened for photos.
Only selling since we didn’t end up with a Nori GX.
Purchased a Heritage...