Response below written before all those paragraphs disappeared. ---
"Discrete" just means "a command that performs one specific function".
"Toggle" typically applies to a "power" or "mute" command where it alternates between two distinct states, but you could still apply it without confusion to "input" or "sound mode" where there are distinct, but more than two, possibilities.
"Toggle bit" or "parity bit" delves down into the actual structure of the IR code. Certain formats, such as RC5/6/MM, have two forms of each command as a means to prevent accidental duplicate reception of commands. So if a device that uses toggle bits sees two "A" versions of a command in a row, it only performs that function once, and will wait until it sees a "B" version before performing that function again. And after that, it expects the "A" version again. Note that not all devices that use toggle bits actually REQUIRE them, for example Marantz basically ignores the toggle bit components of its RC6 code format.
Now as to your question... I don't actually know if there's a specific term beyond "toggle" applied to IR codes for what you're describing. You could say the code "steps through", or performs "sequential" functions. From a programming perspective you could say it is an "array" code.
In the end, it's probably just clearer to refer to them as toggle codes, or just not refer to them as anything specific at all, and instead concentrate on the "discrete" versions if necessary.
