No diagonal doors. There's a residential garbage can on the lot. All cooking appliances have been deleted and replaced numerous times since the mailbox has been replaced. The stoves I'm trying to use are just the usual one-tile household stoves.
As soon as I put this lot into my neighborhood, I went into it and used the "changelotzoning residential" cheat so I could move a sim onto it.
Have you tried a different sim on the same lot? I've had inconsistent issues since the base game --when I was hack free-- with a few sims who either can't use the stove (I can't recall if they even got the clean option) or can't clean plates.
I'm going to try to put another sim on this lot and try that. Did these sims regain their ability to cook/clean when they were moved out and moved back in?