I’ve never given any thought to who might have designed and/or illustrated Tarot Cards, I suppose because I figured they were something that evolved over time and were already established by the time card/game companies began printing them. The popular version that I am familiar with turns out to have been illustrated by one Pamela Colman Smith, an illustrator who attended (but did not finish) Pratt.
Pamela Colman Smith (16 February 1878 – 18 September 1951), also nicknamed Pixie, was an artist, illustrator, and writer. She is best known for designing the Waite-Smith deck of divinatory tarot cards (also called the Rider-Waite or the Rider-Waite-Smith deck) for Arthur Edward Waite.
The Beinecke Rare Book & Manuscript Library of the Yale University Library: