In a similar sense to a comment I read in this post with siblings. I'm a twin. Born two minutes apart. (We're not identical, we're fraternal) Initially, we were raised pretty similar. Yet me and my brother from birth were just very different people. My mom and grandma, who raised both of us, tell him and I all the time how different we were growing up. As twins, yes sure we had quite a bit in common, shared many commonality's and 'twin-quirks' But from very very early on we were different. Even to this day. I am not sure what exactly his type is. If I had to guess I would say ESTP.

I have gotten members of my family (except my brother) to take the test a couple different times and they've consistently gotten:

My Grandma - ESTJ

My mom - ESFJ

Myself - ENFP

*My Twin Brother - ESTP? (This is my best guess. I'll have to get him to take the test here soon.)