It’s funny you mention rugby, because I have a cis female friend who plays. She’s 5’11 and ~180lbs, and an absolute tank on the field. I’m trans, and we’re basically the exact same size/weight. Her 1RM on basically anything other than bench has always been higher than mine, even as a guy

Just to add on to this: I was an all state scrum half and played at a division 1 school in college, and I have played with women that can absolutely wreck my ass on a rugby pitch. There’s absolutely no reason a woman couldn’t play with men if they’re at the same skill level.