With every payment method Shopify offers in checkout: PayPal, credit card, Klarna, invoice, bank transfer and payment methods you created yourself. The app matches a payment method by its name. Part of the name is enough: "PayPal" also matches "PayPal Express Checkout".
Two limits come from Shopify: payment methods whose name is a logo (Shop Pay, Apple Pay, Google Pay) can't be renamed. And in the United States and Canada, a store that isn't on Shopify Plus can't customize credit card fields: the rules work there on all other payment methods, and credit cards stay as Shopify shows them.