My fellow homeowners will know the joy I felt after finally acquiring and installing long-kerf weather stripping around the drafty door following three failed attempts with other mismeasured "long kerf" weather stripping.
(I should have known Americans and Chiners wouldn't have a shared understanding of what the word "long" means)
I bought two variations from Lowes and three from Amazog before I finally found an adequate one, so in case it helps anyone:
https://www.amazon.com/dp/B0CYBZGNYK