Forgot to add dimensions

I would keep the shower and toilet layout as you show above. I'd suggest a long vanity along the bottom wall with two sinks and linen shelves in the bottom right corner. Then rotate the tub so it's centered on the 3-8 window on the top wall. If you need a dressing table, it could be along the wall between toilet and tub at the top.

I would do a combination of the two. I would do the shower and toilet placement of the first one with the tub placement of the second. From there i would make the vanities slightly smaller ( keeping them beside the shower) with a drawer bank in between and place a shallow but fairly wide (maybe 2 27") linen cabinet on the wall across from the vanity

So I’ve circled back around and switched some things around and added things I definitely wanted in the space. Opinions on functionality and use of space? Is there anything I’m missing or think should be moved/added/deleted? Thanks so much for advice, I’m really wanting to get this perfect, I’ve been waiting awhile to have this project started!

I don't think you have enough room between the tub and the shower, Are you using a 60 inch tub. I would want a 30 inch walkway or more to the toilet.

If you decrease the shower space to 36 inches by 56, your walkway would be improved.

When a toilet is surrounded by walls as deep as the toilet, I prefer a 36 inch space or more for the toilet.

Here is another idea that might work. Can you move the bathroom entry door? I moved it over 6 inches to allow for a 56 X56 inch shower.

I like the vanity for makeup under the window with drawers next to it. Also, the tall vanity as you have drawn next to your entry door closes up the room.

pic on right is alternative if entry door can't be moved.

It will be a smaller 54” tub. I unfortunately can’t move the entry way, but I love the drawing you mocked up. I originally had a 15” deep tall cabinet when you first walked in and it seemed less intrusive so I may go back to that. I really like the corner door access for the shower or i could always move the bath further away from the shower and toilet, I’ll have to go back to my design and see the distance between the space. Thanks so much for your time, I may have to shift things around again lol