This screenshot is taken after I've added just plain "English" to my installed languages. Spotlight works again.
Note that the 'sort' box only offers English as a sort option, not U.S. English. This is what gave me the hint that I probably needed to install English.
Anyway... off topic, sort of, but in case it helps any other US users.
Cheers,
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sonoma 14.7.1, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB