The most reliable one I see and hear all the time, is:

"It's not X. It's Y."

or

"This is not X. It's Y."

Also when something is misspelled by a human such as "IOUS" and "read" incorrectly by a synthetic digital twin as "I O U S" instead of "IOUs." And sometimes a word is accented incorrectly.

I hope these shibboleths stay, because they at least alert me to sloppily edited AI.