Hi,
I don't know that I have an "authentic" cannoli recipe, like you say, and I agree, there are many out there. I have made cannolis two or three times. No matter the cream recipe you use, I found the shells to be the challenge. You have to make sure your oil is a particular temp for one and well, with dough, sometimes its hit or miss. Once you make the shells, you should not fill them until just before you are ready to serve, so they stay crisp.'
Here I used her shell recipe:
https://www.youtube.com/watch?v=NG0aZMSwPT0
Here I used her cream recipe:
https://foodfolksandfun.net/how-to-make-cannoli-cream/
The family loved them.