https://crisp.org.uiowa.edu/sites/crisp.org.uiowa.edu/files/2020-04/crisp_vol_25_8.1.pdf

While most previous research does indicate that men show an implicit out-group bias towards women and women, even including straight ones, tend to have an in-group bias, I found it interesting that this study infers that gay men unlike straight men had an in-group bias towards men.