I've accepted that my power drill/driver disappeared last year, though
I've still got one battery and the charger. I need to decide what kind
of replacement to get.

Do I need 18V? I assume not. My intended uses are in the home,
including renovation: putting up drywall, mounting cabinet doors. I
doubt I'll want to drill masonry on my own. I also assume I don't want
a hammer
driver.
Of what's available at Home Depot or Lowe's, what's recommended? What
considerations are there? Some of the products are distinguish from
each other only by features whose usefulness to me I can't ascertain.

IMO:
-- variable speed
-- Two max speeds (drill bits and screw bits)
-- Reversible
-- Nice if there's a stop clutch to stop spinning upon release of
trigger
-- Two batteries (one in use, one charging)
-- Variable Clutch
-- No key chuck needed to change bits/drivers.

My last driver drill has those features & it's the best I ever had.