any reccomendations on collared shirts and the ties thatt layer onto them properly?

I know the trans-dimensional shirt and the grimdark gentleman shirt works with the watchers tie, striped ties, tie and pin items, and various other ties so I'd give that a try. There's also the Dressed To The Nines Black Attire with is a tie, shirt, and a jacket which could help in a pinch.

You can also use the clip-on ollars to help give it a smoother look in various colours.