I don't think there is a published list. I read some of the posts and went from there.
I would certainly suggest you buy:
A box of 30 Tena (or equivalent) Absorbent level 2 pads
Two or 3 packs of 10 Vivactive (or equivalent) Maxi pants
A box of Instillagel
A soft cotton waterproof sheet ( I bought mine from Dunelm)
I used a separate bed when I had the catheter in and laid on the waterproof sheet but, fortunately, because I was wearing the incontinence pants I had no leakage on the sheet at all. Although your husband will not be able to drive for at least 2 weeks after the operation I suggest, especially if you have a luxury car, that you buy a waterproof covering for the driver/passenger seat. Fortunately, I did not leak on the seat as either a passenger or as the driver but it was worth having it there just in case. Finally, it would be useful if your husband doesn't already have a pair to buy some loose fitting trackie bottoms.
Ivan