Shortly after posting my question I came across [AutoRaise][1]. It supports warping the mouse to the center of a window selected with the application switcher and giving the window focus after a user-definable delay. The setting "AutoRaise -delay 0" will disable the focus-follows-mouse behavior and only auto-raise a window if it was switched to through the app-switcher.

(I actually forgot that I had stumbled across AutoRaise last year on an old MacBook. I got the pings of memory after posting the question and then dusted the old MB off and found it. I'm not sure why it never came up after exhausting what I thought was every way of searching for this behavior.)


  [1]: https://github.com/sbmpost/AutoRaise