By Andrew Holleran Transgender swimmer Lia Thomas had a pretty dominant performance at the Ivy League Championships this week. Thomas, who swims for the Penn women’s team, previously swam for the men’s team. She’s become a dominant force in the pool this year. The Penn swimmer broke multiple pool records and won three titles at the Ivy League Championships this week. Thomas won her third title, the 100m freestyle, earlier this weekend. CNN had more on the championship performance: Thomas, a transgender woman, narrowly beat out Yale’s Iszac Henig, a transgender man, who finished in 47.82 second…