At the moment no gfx card ships with thunderbolt or USB-C video port. And LG UltraFine 5K display requires two DisplayPort channels over a single Thunderbolt. A proprietary Apple solution that doesn't work with anything else in the whole world, but costs a ton of money!
AMD's new RX 7000-series cards ship with USB-C ... Nvidia ditched it with RTX 3000-series unfortunately (2080 Ti was the last one)