Answered by Mukesh
The store lists the brands it offers so you can browse what is available before you buy, and you can search by name if you already have a brand in mind. This way you are choosing from cards that can actually be purchased rather than hoping a particular brand exists.
Brand availability can change over time as new partners are added and others pause, so it is worth a quick look rather than assuming. If a brand you want is not listed today, it may appear later, and checking back occasionally is the simplest approach.
If you are buying for someone with a clear preference, confirm the exact brand and any regional variant before paying, since similar names can be easy to mix up. Picking the right brand up front means the recipient can spend the card exactly where they were hoping to.