I’ve used a towel style bath mat for decades, I think it’s the most hygenic. It goes on the floor to shower, then gets hung to dry between showers.
I lay floors and hadn’t seen a “permanent” bath mat in years but ran into one today. It was that typical shag rug style, bright pink. This was a clean house but it was strange to me, I didn’t think anyone used those anymore.
I use a plush dedicated mat with a rubber back so it doesn’t slide around. The fabric is like soft microfiber I think. We use the ol squeegee method before stepping out of the shower so it doesn’t get drenched. I just toss it in the washer when it needs a cleaning!