Hair Type Help

I have been searching for my hair type and just realized something does finding your hair type really help I mean are they're certain products specifically for a hair type because if so I have what I think is 4A hair well I know it's in the 4's. What products would be best for it I use a lot of creams but I heard butters are great, and that gels usually just end up flaking on that hair type due to having to use so much to get a certain look? Also how much should you wash type 4 hair if it has the tendency to get kinda dry my grandmother said wash it like once a month I don't know all about that though?

These are the products i use:
shampoo- Shea Moisture Curl and shine shampoo
Conditioner- Yes to Cucumber or Yes to Carrot
Leave In- KCKT
Oils- EVOO and coconut oil
Moisturizers- qhemet biologic AOHC
Gel- KCCC or eco styler gel
Deep Conditioner- Aubrey Organics Honeysuckle rose

and these are my products i refuse to be a product junkey anymore (its seriously hurting my budget) so im going to stick with these products

now about washing every month lol nooooo i wash my hair twice a week..the first wash is on Saturday and i shampoo and DC..the second is on Wednesday and i only co wash..i use to cowash my hair daily but now im wearing twist outs instead of wash and gos so no more wet head in the morning!!!