Rainbow plant life also has some good recipes for vegan cheese/creamy sauces. This is a nut free and tofu free one rainbowplantlife.com/nut-free-vegan-cheese-sauce/…. The one I like is a cashew quest but I appreciate that cashews can be expensive.

If you can tolerate nutritional yeast it helps give things that cheese umami flavour. Might be some ideas here anyway