Mmmango you are so overthinking 
You can have as many, or as few, categories as you like.
I break mine down completely, because I have a complex pattern of incomings, with some monthly, some weekly, some 4 weekly, etc., and a variable pattern of outgoings.
So my categories are:
Household Expenses
Groceries
Home Maintenance
Household Goods
DIY
Admin/stationery/computer
Car repairs
Birthday presents
Birthday parties/celebrations savings (for DDs)
Travel Expenses
Fuel
Parking
Social Expenses
Eating out
Spending money
Treats
Days out
Extra-curricular Activities
Swimming
Gymnastics
School Expenses
DD1 cooking money
DD1 school trips
DD2 school trips
DD3 school trips
School clothing
Week 1 bills
(All bills due week 1 as sub-categories)
Week 2 bills
(as week 1, but for week 2)
Plus master categories for Weeks 3 and 4
Termly/Quaterly/Bi-Annual bills
Personal Expenses
Hairdressing, etc.
Pet Expenses
Dogs and chickens
Rainy Day funds
Lump sum payment savings
(Aiming to save enough to start paying annually for insurances, etc., to avoid interest)
Then I have separate master categories for two other savings accounts, so I can track the balance in the budget.
So, as you can see, you can have masses of categories.