I would add Lisa Middleton who was re-elected to Palm Springs, CA City Council.
Agreed, visibility is VERY important. When an LGBT elected official deals with another non-lgbt elected official, it represents a reminder that it is part of their being and something to be considered/dealt with. Also, regardless of how supportive a non-LGBT official is, it is not the same as having your perspective coming from lived experience.
I met Sarah McBride a couple of years ago. While she has had some serious setbacks in her life, I think it has had the effect of strengthening her resolve.
Anyway, I wish them all well and continued success!