We did a study of this a few years ago[1] and the code for the instrumentation is available on github[2], the data is dated but you can see a cross section of popular apps and how far behind they were lagging over a 3 year period on page 11 of the pdf. Re: child comment, our main concern in this research was patched vulnerabilities persisting in electron apps and how damaging that could be. Details in the paper :)

1. https://www.usenix.org/system/files/usenixsecurity24-ali.pdf 2. https://github.com/masood/inspectron