According to History.com, here are the foods that were and were not present at the first Thanksgiving (which they cite as 1621)…

What was on the menu:
Seafood: Cod, Eel, Clams, Lobster
Wild Fowl: Wild Turkey, Goose, Duck, Crane, Swan, Partridge, Eagles
Meat: Venison, Seal
Grain: Wheat Flour, Indian Corn
Vegetables: Pumpkin, Peas, Beans, Onions, Lettuce, Radishes, Carrots
Fruit: Plums, Grapes
Nuts: Walnuts, Chestnuts, Acorns
Herbs and Seasonings: Olive Oil, Liverwort, Leeks, Dried Currants, Parsnips

What was not on the menu:
Ham: There is no evidence that the colonists had butchered a pig by this time.
Sweet Potatoes/Potatoes: These were not common.
Corn on the Cob: Corn was kept dried out at this time of year.
Cranberry Sauce: The colonists had cranberries but no sugar at this time.
Pumpkin Pie: It’s not a recipe that exists at this point, though the pilgrims had recipes for stewed pumpkin.
Chicken/Eggs: We know that the colonists brought hens with them from England, but it’s unknown how many they had left at this point or whether the hens were still laying.
Milk: No cows had been aboard the Mayflower, though it’s possible that the colonists used goat milk to make cheese.

I hope I get to eat a bald eagle with some grapes and acorns this Thanksgiving- sounds like a meal fit for a king!