As for the GMT, the Rolex ( 6542 / 1675 / 16 750 / 16 750 / 16 700 / 16 710 / and the latest with the ceramic bezel ).
As for the WT, the Patek ( 5110 / 5130 ).
Nown there are some cool outsiders:
As for the GMT, Ulysse Nardin offers some very interesting models, such as the simple San Marco; or tje exquisite Sonata, without forgetting the Perpetual Calendar.
As for the WT, I would give a special mention to two watches here: The Girard Perregaux WW TC, and the JLC Master Geographique ( the latest one is exquisite ).
Best,
Nicolas.



