Variety of flour

[Lollipopslife17]

So, I walked into my local Holland & Barrett yesterday. The 1st in a long. I have never noticed the different types of flour there are until yesterday and I am wondering if anyone here could tell me how they can be used
Maybe for baking cakes? There was
Coconut flour
Soya flour
Maize meal
Ground oat bran
Rye flour
Brill brown rice flour
Buckwheat flour
Arrowroot
Vital wheat gluten
Unmodified potato starch
Phew, that's a long list.
Also, I had bulgur wheat today instead of rice. Is it actually better & healthier than rice?

Basically, the different flours are for different dietary requirements & also more ethnic recipes:

Rice & soya flour are usually to make baked goods for celiacs that cannot have gluten. Just normal stuff like muffins, pancakes, pie crusts.

Rye, coconut, buckwheat, oat bran, wheat gluten, and arrowroot are usually mixed with regular flour to make different breads. For example, rye bread is made with 60% rye and 40% regular strong bread flour. So these are low gluten flours with different nutrients and protein that you mix with wheat flour...another example are buckwheat pancakes which are 20% buckwheat and 80% plain flour. You might find other flours too like amaranth. You can also use soya flour in the same way too.

Maize meal is used in Native American recipes for Johnny cake, corn pone, corn meal muffins, etc. It’s similar to polenta only more finely ground. They make a great traditional side to Tex mex chili..

Potato starch is a thickner like corn flour (aka corn starch in states), you use it to thicken sauces and stews. It’s for people allergic to corn flour.

You can use the vital wheat gluten to make seitan, a sort of vegan "meat".