The Trinity Tiny by Alabama Tiny Homes with its unique back wall of the house located loft staircase. I am surprised that more designs do not incorporate this as placing the stairs in the typical parallel orientation gobbles up a lot of the already narrow width.
Floating loft stairs in the Rook, by Wind River Tiny Homes.
Quite the opposite of the typical built-in storage type stairway.
You can see that below each step is an I-beam as there would need to be significant horizontal structural support with a design like this. There would be additional steel structure built into the wall as well.
I would like to see a wall mounted handrail though.