I've been in virtually all of those modes, at various points in my life. For a while, I was regularly getting up at around 4.30am, and I loved it - the quiet house, the darkness slowly becoming light, all that free time before civilised society started making demands on my time... Lately, I've been getting up at more like 8am or 9am, often in a "I want more sleep!" mind-frame. Yesterday I woke up at 4am for some unknown reason, and it was like being back at that earlier stage - I was happy to be awake at that time. This morning, I got up just before 7am, and I've been less enthused.
The last several mornings, however, I've woken up in a cold sweat and somewhat anxious. Not sure if it's the weather, or my dreams, but yeah. Fortunately, the anxiety doesn't last that long. Or rather, it goes away temporarily when I start doing things.
I've also had points in my life where I would wake up past noon, thinking, "Damn, I want more sleep!"