Early in the 1900s for a very brief period eugenics was thought to be a way to rid the world of disease, before it became clear what it would entail. The amendment to ban alcohol and the amendment to unban alcohol were both part of the progressive movement as well. So nailing down what is centrist, progressive, right wing is very much time dependent.

Abortion was very much popular in non catholic churches until the 1980s when republicans roped it into the culture war.