"Dyslexia, also known as word blindness, is a learning disability that affects either reading, writing, or speaking".

It's quite common, it affects 3–7% of the population; however, up to 20% of the general population may have some degree of symptoms.

https://en.wikipedia.org/wiki/Dyslexia

For example, some celebrities with dyslexia:

Jennifer Aniston

Steven Spielberg

Whoopi Goldberg

Henry Winkler

https://www.webmd.com/children/ss/slideshow-celebrities-dysl...

The following is a list of some notable people who have dyslexia.

https://en.wikipedia.org/wiki/List_of_people_with_dyslexia