I liked these! I think dot snake was my favourite, the mechanics were very intuitive and I liked a lot of the levels.
Stepping stones needed some more levels to really explore the mechanic space.
I found B&W pretty easy - once you get the hang of moving blocks in one colour to create a path for the other colour, a lot of the levels are pretty straightforward. The mechanics are cool though, so I think it just needs some more levels and maybe re-arranging them to have a better difficulty gradient.
I've not got around to commenting on your other posts but I've enjoyed lots of your games - keep up the good work!