That's a long list. Narrow it down a little first? Go to the store, feel up the product. Some are heavier / lighter, some offer ergonomics like a large padded handle or even an extending handle and roller wheels like luggage. Compare fuel tank size, compare dB rating vs load vs distance of measurement.
I think at least one of those offers a twist-lock 30 amp connector
Most anything rated at 2000w actually means 1500-1600 watts with some SHORT surge capability... if your charger actually draws 1800 watts (15 amps), you can eliminate most of that list right away, unless you're looking at buying two generator and running parallel.