Guys called Dave, girls called Sarah?

I’ve known several Daves in my life, they are all basically nice guys, who in one respect are stuck in their ways.
On further reflection, they all have caring, middle-of-the-road parents, which probably explains it.
Their parents tend to be churchy.

The same is true of Sarahs I know.
Also biblical / churchey background (Abraham’s wife, a noble woman and mother).
+Sarah’s tend to have straight blond hair and often marry Davids.

I’m sure there are exceptions, but I think I’m being statistically significant.

Can this be said of other names?
Are we type-cast?