As some who, along with my partner, needs to be on an anti-inflammatory diet to help with a condition, here are some foods that I seek out and some that I avoid, along with a few alternatives in parentheses for the ones I avoid. These are non-exhaustive lists.

Recommend: Nuts and legumes, particularly those with high Omega-3 fatty acid content; eggs (it is safe to have up to 3 a day long-term, there are recent studies on this); onions, peppers, garlic; non-exotic spices are important including paprika, sage, turmeric, ginger, black pepper; chia, cassava, or almond flour tortillas (instead of corn or wheat); dairy products (cheese seems to be fine for us, as for milk we use oat or almond milk)

Avoid: Gluten containing grains including wheat (replace with brown rice, buckwheat quinoa, legume-based pastas); ultra-processed foods (have packaged organic foods without presevatives); high amounts of sugar; corn due to its high omega-6 content; red meats such as beef and pork also due to omega-6 (fatty fish, chicken, other seafood, vegan proteins like beans, tofu, mushrooms)

I should add, please do you own research. Certain foods are generally better for the average person, as I find through knowing other people with immune disorders, but others can have mixed results for a subset of the population. What I do strongly stand by is the list of some of the foods I avoid.