Saved from a basket someone left at work. My wife has been calling this her Office variegated. Now that it’s home I should learn the proper name for it. Common name, prayer plant.
There are many varieties of Maranta. At least 3 are described in this article (2 having blotches), plus it tells how to take care of them: https://www.thespruce.com/grow-maranta-inside-1902647
Thank you Plant Identification and discussion group on FB.