Visa, Mastercard and Discover artwork: Datatrans payment-logos.
Source: https://github.com/datatrans/payment-logos
License: Creative Commons Attribution-ShareAlike 4.0 International
https://creativecommons.org/licenses/by-sa/4.0/
American Express artwork: Pentagram Studio / American Express (2018), via Wikimedia Commons.
Source: https://commons.wikimedia.org/wiki/File:American_Express_logo_(2018).svg
Public-domain text logo; trademark rights apply.
All artwork is unmodified. Brand names and logos are trademarks of their respective owners.