Wow, there are a lot of details to consider in a bathroom. The plan calls for a curbless shower in a fully tiled room in both Bath 1 and Bath 3. I'll describe what I want including specific details.
Vanity
There are many things that need to be by the sink. I want a place to tuck them all away except for soap and a towel. I need storage for: toothbrush*, toothpaste, razor, shaving cream, skin lotion, cologne, nail clippers, tweezers, beard trimmer*.
For most of these things, a drawer makes the most sense. A silverware-style divider for toothpaste, razor, and so on.
I like the designs that hang off the wall, for easy cleaning underneath (or, alternatively, for lack of a wet and eventually rotting baseboard). But I saw a table with feet and a slatted shelf for extra towels that looked nice, as well.