Make sure to buy one with a dedicated button for each letter you want to use. Really, I would recommend something QWERTY just for standard compatibility.
Scarastic jokes over, it literally doesn't matter at all. Just look online for the cheapest keyboard with the features you want. Type on a cellphone touchscreen keyboard if you are so inclined. If you are typing so much that it really starts to hurt your finger joints or muscles, then you can maybe start to look at ergonomic keyboards and see if they'd be right for you. Beyond that, your time is better spent actually coding than worrying about the proper type of keyboard to use.
As someone else who dabbles in cybersecurity - hard disagree. If developers and alleged IT professionals got their shit together, most data breaches wouldn't be a significant problem. Looking at the OWASP top ten, every single item on that list can be boiled down to either 1) negligence, or 2) industry professionals negotiating with terrorist business leaders who prioritize profits over user safety.
Proper engineers have their standards, laws, and ethical principles written in blood. They are much less willing to bend safety requirements compared to the typical jr. developer who sees no problem storing unsalted passwords with an md5 hash.