I'm a YNAB user too. I have main categories like Monthly Bills and then they are broken down under that into:
Council Tax
Energy
Water
TV License
Internet and TV subscriptions
Mobile Phones
Life & mortgage insurance
Everyday Expenses has categories like groceries, haircuts, pets and things for the kids.
Abode is broken down to include the mortgage, house repairs, decorative things like cushions, window cleaner etc
Fun is entertainment, eating out, pocket money for the kids and a small 'splurge' allowance for DH and me as well as Amazon Music and an events category where I save up for big ticket things like concerts or a football/rugby match.
Car is the AA, petrol, car maintenance, car tax and insurance.
Gifting has two categories - giftage and giving (which includes charity donations) and Christmas.
Savings - obvious one!
Investing - Vanguard and personal pension
Holidays is savings to go away but also separate categories for cat and dog boarding and airport parking.
Then I have yearly bills where I put small monthly amounts towards things like home insurance (which I pay yearly), Microsoft and the car service.
Lastly I have a 'wish farm' where I chuck any bits of extra money for something we'd like but isn't essential - currently a bike rack for the car.
I separate everything into smaller categories so I can really see where my money is going and also move it around - e.g. forgot that school trip needs paying for so I'll reduce the entertainment budget to cover it. YNAB has been a game-changer for me.