I don't mean to be flip, but the foods that will help the most with lactose intolerance are the ones that don't make you sick!

Otherwise, two thoughts:
1)There are a lot of stories from folks who always assumed they were lactose intolerant but tried raw milk and have no problems with it at all, so it might not be the lactose that is creating difficulty.

2) Elimination diets can go a long way toward healing the gut and improving our tolerance. Some people who have a very hard time with certain foods find that they can reintroduce them without issues after a while on something like Whole30 or lion diet. Others feel so amazing that they choose to continue eating that way long-term. In any case, the nice thing about this is that you can basically run your own experiment.