Josha Stradowski has been cast in the role of Rand al’Thor, with Marcus Rutherford set to play Perrin Aybara and Zoë Robins playing Nynaeve. In addition, Barney Harris will play Mat Cauthon and Madeleine Madden will play Egwene Al’Vere.
They join previously announced cast member Rosamund Pike.
Amazon is also producing a show set within the world of The Lord of the Rings, so they've got the market cornered for beloved high fantasy adaptations.
I only recognize Madeleine Madden from Picnic at Hanging Rock, and I liked her well enough.