Ed, as I recall 30-Amp service dates back to a period before RVers used so much electricity, so it would not surprise me if it slowly gets replaced by 50-Amp as the new standard.
By the way, if I had to guess, I'd bet all the loads on your list were not pulling power at same time; at least not for long. In my old Class C I could just run the AC and microwave off the generator which could produce 30 Amps or more. Granted newer equipment is more efficient, but your list appears to easily exceed 30 Amps if all were on at once.
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