Express Card

So this is also a really bad idea but I accidentally found Express Card-based wireless cards searching for other cards:

Up to High Sierra:

  • Atheros AR9280

    • Ubiquiti Networks SR71-X (802.11 a/b/g/n, 2x2)

With this model, you'll need to reinject the old AirPortAtheros40 plugin used in High Sierra to work in Mojave