Diora is the only one I know of, she is often available late.
She has mostly bad reviews here from what I've seen, but IMO you just have to know what you're getting. She is not GFE. No kissing, doesn't like her breasts being touched much, no MSOG. But she does 15 and 30 minute sessions, so if you're just looking for a quick lay and can live with her rules, you may want to consider her. Very tight body.
I haven't seen her in over a year, but I saw her about 4 times in total and honestly, enjoyed my sessions. She always had a good attitude with me and she has a lot of energy (very enthusiastic cowgirl). She is also easier to get last minute appointments with than any other SP I have tried, just call her cell, which I believe is listed on EC. From what I recall, she does not mind being called late.
If you're looking for a late night GFE type sp, I have no idea.