Toxe Godot text editor, but the Godot editor's defaults behave identically to the VSCode shortcuts, hence invoking its name.
Unfortunately if there's several items spread across different, non-adjacent, non-aligned, lines it's not a simple click-click-click, with keyboard shortcuts you can't pick an arbitrary second carat location. I use the keyboard only shortcuts for all they can do, but they can't do what the alt+click does.
kuligs2 Sublime is missing a lot of the nice IDE features that even the base Godot text editor has, particularly with function/method/property suggestion, as well as expected inputs for those functions/methods.
And Although Rider has a lot of those features, I've found Godot to be a little clunky with external editors, with 4.4 and 4.4.1 I've had had errors occur due to Godot not syncing the changes, and worse, getting caught in an error state thinking the code was corrupted, and requiring a restart. I was going to give Rider another go in 4.5 once it left beta.
Putting aside the AI slop as it's not relevant to my question as add_caret_above/add_caret_below are keyboard only shortcuts, and only creates a single, aligned carat either above or below the last placed carat, the idea of exclusively using the docs search is more unwieldy than just retraining my derpy hands to us alt instead of ctrl, inline hints of what a particular object's properties and methods are, are how I find the Godot equivalent of like 90% of the game engine concepts I'm familiar with from other engines, but not familiar with Godot's specific names for, but if I had to do a specific website search every time I'd get nothing done at all, lol!
Side note: Not sure if it's supposed to be funny, but why change the name of software... it's... weird?
Unfortunately it looks like the topic has drifted from my question, and appears the answer is "You can't"
Thanks to everyone who responded, and maybe Godot will further open up their shortcut customisation in future!