Hamster being Asleep, Deep Sleep and Can Not Sleep

Lately, I have been studying the sleeping patterns of my hamsters and it seems there are 3 types of them.. First is you see they are asleep and breathing slowly where one little tap on the fingertips can wake them up like this.

Then there is this type where the hamster goes into  deep sleep and would not wake even if you handle it or stroke it. Sometimes, the hamster appears to be dreaming or eating in his sleep as their little teeths grind a little..

And of course there is the third kind where it could not sleep with eyes semi open. It appears as if the hamster is a little sad or bored.. But after some time, it moves to a different sleeping position and then there would fall asleep quickly.. Cute..