This clinician says that “Hashimoto’s” patients see benefit on an anti-lectin diet. He doesn’t talk about “Hashimoto’s” in detail but the entire video is on what lectins are and why they are problematic. I linked you to the minute he mentions Hashimoto’s Thyroiditis. Clinical anecdotes can be a somewhat useful place to start. I hope it helps you on your health journey.
https://www.youtube.com/watch?v=8kmo5UcGPXo&t=2381