Are there any notable individuals who began life nonverbal but learned how to communicate orally and became successful?

I have heard many times that Albert Einstein didn't speak in his early years, so went to fact check it. Turns out it is not true, but I learned a fun fact that is hard to not share:

When he was two years old, his parents made him excited that he would get a little sister to play with. When she was born and he got to meet her, he was slightly confused and asked about the baby: "Where are its wheels?"