I am very lucky that I put my foot down as an adult and don't get anymore of this.
However, as a teen, I was told that my influence was causing younger (adopted) siblings to act up, they would try to one-up me so someday when they were selling themselves for heroin money it would be My Fault. Yeah my psych had to really help me with that one. The ironic thing was, I had a 3.9 GPA, I went to all of two parties where there was alcohol my entire teenage life, and one of those parties got busted but I was not in trouble because I passed the breathalyzer test. I didn't play scrabble until I was getting ready to graduate high school, and as young as my parents were when they married I wasn't actually much younger, I just didn't have a ring on my finger. So all my sibs would have had to do to one-up me was actually drink a beer or start dating early...None of them have ended up selling themselves for drugs at this point, though I do have a brother I wrote about in the scammers thread who is serving time, thankfully no one blames me for his many, many wrong choices. He has fetal alcohol syndrome, you see, so we all need to forgive him again and again (ha) because he can't make good choices, totally incapable.
I also got the "quit sticking your butt out" thing, after several times I finally said "That's how my butt is built!!" and Mom knocked it off. Note, it did look funny, I had a thigh gap and a bedonk-a-donk all at the same time, and her comments didn't help. There were little things about skin and hair...we'd dye our hair together every 6 months or so from the time I was 10 (this was after several failed attempts at a perm when I was 7) until Mom got her colors mixed up and I ended up with gorgeous burgundy hair at 16. I loved it but she wasn't too happy.
The time I sprinted faster than my track-running sister and beat her to goal, didn't really rub her face in it or anything but apparently it really hurt her feelings because Mom lectured me about how my sister works so hard, and I'm naturally fast but should let her win because she actually works for it...that one was a bit strange to me even back then.
Again, very grateful that comments have mostly stopped as I've become an adult. I had to mostly cut off my FOO for about a year (holiday contact only) and after that we don't talk about controversial topics (my not taking the kids to church, my tattoos, DH and my occasional alcoholic beverages and daily coffee, to make a short list). Unfortunately I don't always hear about the big things that happen in my sib's lives, but as they grow up and realize they can reach out to me themselves it's been helping.