Which SD to buy. Speed

Which SD to buy? What are the fastest SD? Here is the list, from the slowest to the fastest updated in October 2018 Just read the abbreviation on the card. SD : the oldest. Capacity from 128 MB to 2 GB Format FAT 16 SD HC Capacity from 4GB to 2 GB Format FAT 32 SD XC Capacity from 64GB to 2 TB Format exFAT SD HC I - SD XC I It is an SD spec. 3.0...