I am *not* an early riser. And it's not from lack of trying. I had to get up around 5:30am for several years, and while I did it, I never got used to it/liked it.
I don't sleep really late, but I find that my natural happy wake time is around 8am. Sometimes (especially when anxious or if I happened to go to bed really early) I'll wake up at more like 7am, and on occasion when I didn't sleep well I get up at 9am. I am very lucky to have a job that almost always accommodates this. There are fewer than 5 times a year that I usually set my alarm, and even then it's b/c I have to get up t 7-something and want to be very sure that I don't over sleep.
However, I am very productive at night. After everyone else has gone to bed (so from about 10pm-midnight) is my favorite time to do crafty projects, paint, bake, organize things, do financial planning, etc. I have no desire to flight my general schedule (generally: get up, eat, do some kind of work from about 10am-noon or 1, eat and rest, do some more work from about 3-5, eat and relax with family, and then do productive things from about 10-midnight).