My aunt & her DD are both S & my uncle & their DS are both J.A. (same middle name, as my DS also).
My sister, my DD3 & I are S, 2 of my kids are J.

Its not something anyone comments on. My sister & I were the only girls. I don't know if my aunt & uncle intentionally used those initials or not. I have wondered, but not enough to ask.

I get more comments on the fact that I'm Skye & my DD3 is Summer Unintentional & now I'm wondering if I should've thought a bit harder.
We also called DS Jesse while we had a dog called Jess. We obviously just went with the names we loved & didn't give a second thought to anyone else's oppinions. (We didn't name DS after the dog! We did get asked though!)