There are lots of options. You could do slatted shutters on the bottom halves. Cafe curtains on the bottom half is sweet traditional look for kitchen windows. Roman shades are popular too. There are many blind options that can provide light while providing privacy as well but in kitchens keeping them clean is more difficult than washable options.

Looks like you have a decent amount of depth so you could do a top down/bottom up shade.

Cafe curtains would be perfect and homey. Plus using spring rods no damage to the wood. I’ve seen very cute ones made from tea towels/dish towels. Something related to baking.