I was born in 1966. My parents wanted to give me an unusual name that would stand out.
They named me Jason, which was pretty unusual at the time. Ten years later, the name became one of the top boy names for newborns.
I thus have had both a rare and common name. I liked it much better when Jason became common and everyone knew how to spell and pronounce it.
In the mid 80s, I coached a Little League team, 5 of the starting 9 boys were named Jason.