I use pocket nappies, a mixture of Alva, Bambino Mio, Bear Bott, Modern Cloth Nappy & Nipper Nappies. They all have their own perks, eg the Bear Botts fit really nicely but take forever to dry! The MCN are my go-to and make up most of my stash as the hemp inserts are really good Cost-wise I’ve bought nearly all mine on Vinted and just strip washed them before use so definitely something to consider as it saved me a fortune
Any flats or preflats with a wrap are most cost effective and have quick drying times too. I do use pockets mainly as didnt really think about using flats (did do enoigh research really) but am just starting to venture into them more now. I use baba and boo pockets (we have a couple of alva baby ones bit definitely prefer baba and boo) you can adjusy and change thr absorbancy really easily. I have some bambino mio AIO but havent got on with these for my LB so selling them on x