shower tile board

New here. Hopefully in the right area for remodeling a shower. Can anyone recommend manufacturers who make tile board for showers (where it comes in sheets/planks) instead of using real tile? The bathroom gets more moisture than normal and a lack of grout would be helpful so that mildew is not a big problem. Thanks for any advice.

I wouldn’t use it. As soon as the surface is damaged or a cut edge starts wicking moisture it deteriorates.

Go with cultured marble!!