Hi Yancy and Tamy - likely the most popular brand used in the RV industry is
Splendide. It's what I have in my 340RL. That said, there are other brands that may fit.
Whirlpool for example has long made compact (24") separates that fit in RVs and that people have had good reports on. A newcomer to the space is
Contour. I don't know anything about them and haven't heard any reports from users.
Typical RV Considerations
Compact Form Factor (24" max width)
120V operation (not 240V)
Electric (120v) Dryer (not LP or Propane)