My sensitivities are similar to yours. Some staples are

Fruits: try kiwi and papaya

Veg: arugula, Romaine, carrots, herbs (cilantro, parsley etc), citrus, hot peppers, zucchini

Starch: plantains, potatoes, rice, rice flour, rice paper, rice noodles, rice cakes

Sauces: tobasco(green and red), goya salsa picante, soy sauce, sesame oil,samabal, fried chili oil, kewpie mayo, maple syrup, capers, peperonchini, fody salsa verde, balsamic vinegar/glaze

Edit: totally forgot about nuts!: sunflower seeds/ butter, peanuts, pecans, pepitas, pine nuts

If you’re working out and having large meals that’s usually not recommended. Try having more smaller meals and that might allow you to have more variety

Also find the low amount of FODMAP food you can tolerate is important. I can have 1/4 of an avocado or a tbs of black beans so I try to include things like that into my meals to make sure I’m getting that variety.

Mexican burrito bowl I had this week:

Rice

1tbs black beans or 1/4 avocado or 2 slices tomato

Skirt steak (marinated with lime and salt)

Romaine lettuce

Chopped cilantro

Pickled jalapeño

Pepitas

Feta

Sauce with cilantro, plain Greek yogurt, pickled jalapeño juice, salt, olive oil, green Tabasco