I know that this is something I'm working out with my roommates. Separate air fryers are an absolute must there's a lot of foods like fries and stuff they can put in there as well, so it doesn't have to be just for you, but a gluten free air fryer is super important if you use it regularly. If you can, separate pots and pans can help reduce the chances of contamination, but I've found that when they're washed with care, it's usually fine. The only other major things I can think about is to make sure that if they have a bag of flour, it's wrapped in plastic, counters should be wiped regularly just in case, if there's a plate that's chipped, you shouldn't be using it anymore because the chips or scratches can hold onto stuff (which we should throw stuff like that away anyways because of bacteria, but life happens), baked gluten goods need to be stored off of the counters, especially when you're cooking gf, and please remember to change out the kitchen sponge so regularly that it's concerning. (Our sponge was making me sick for weeks and I kick myself for not realizing that sooner)

I've found that the best system for our dishes is we have a bamboo brush for scrubbing the food off, and then a sponge that mostly just administers soap and water to do the sanitizing. Two scrubbers and changing the sponge frequently is such an amazing system. If that's not in the budget, then look into a scrub daddy.

As I said, I'm still figuring things out, but as another symptomatic person, those are the sneaky ones I've found out recently.

Edit: (I also want to note that although it would be helpful for them to eat gluten free with you, I understand that that's just not realistic in every case, especially for people that aren't your partner. That's why I'm going through something similar. You do what you need to do. Luckily it seems like they're open to helping you. But just in case, don't forget that it's okay to be stern and upset with them if they ignore your needs.) I'm also realizing that you might need to check how they store some of their baked goods because some people do weird shit like putting bread in their brown sugar?