We had ours made. I cut out cardboard templates for one on the driver's side, a triangular shaped one for the top of the entry stairs and two rectangular ones for the two steps.
We bought a remnant we liked and had the carpet company add rubber backing and trim the edges. They're now going on six years and still look great. I stick them in the washing machine on gentle wash once a year. Easy to shake out between washings.
I like the cockpit carpet that Newmar sells, but the point of us buying coach with tile floors was to not deal with carpeting. That cockpit carpet is huge and is like having a carpeted front end.