I use 2 towels a week after a shower.

There, I said it.

The kitchen towels though and downstairs bathroom get washed every time I do laundry, which is every 3 days or so, as more people wipe their hands on them.

Kitchen sponge gets thrown in the dishwasher when its run, also 2 times a week or so.

Jeffs towels ? No clue. I have done zero loads of his laundry in 27 years.