Possible standard payment methods in Magento 2.x
- Banktransfer : Bank Transfer Payment
- cashondelivery : Cash On Delivery
- checkmo : Check / Money order
- payflowpro : Credit Card
- payflow_link : Credit Card
- payflow_advanced : Credit Card
- Braintree : Credit Card (Braintree)
- authorizenet_directpost : Credit Card Direct Post (Authorize.net)
- free : No Payment Information Required
- braintree_paypal : PayPal (Braintree)
- paypal_billing_agreement : PayPal Billing Agreement
- payflow_express_bml : PayPal Credit
- paypal_express_bml : PayPal Credit
- paypal_express : PayPal Express Checkout
- payflow_express : PayPal Express Checkout Payflow Edition
- hosted_pro : Payment by cards or by PayPal account
- purchaseorder : Purchase Order
- braintree_cc_vault : Stored Cards (Braintree)
- payflowpro_cc_vault : Stored Cards (Payflow Pro)