The lead you should go for is data transfer lead as it will charge as well. If you go for a charging cable … it’ll do just that and nothing else.
Be careful with after market leads, try and use official leads only if you can afford them. There is a lot of rubbish being sold out there so be very particular.
I just purchased my USB C leads from Apple so I know they are Data Transfer able and MFI (I think that is the correct term) certified for my iPad mini 4. 