The Wayside Inn in Middletown Va has been serving for more than 200 years... Didn’t make the list.
I assume heavily here that there is a degree of “if you would like your restaurant to be on this list, send us a check for XXX and some sort of docs”
Wayside Inn, Publick House (in mass already mentioned) and I know there are several more in the Bos area claiming to be pre 1800.. Warren Tavern, Durgin Park, Green Dragon,
White Horse in RI 1673.