From what I understand, the ONLY one with a legitimate claim is Mike Delorean. He's right that his mom didn't have to be mentioned in the book; but of course I don't know the context her name was used.
Capone's beef is over some OLD ish that every Mobb Deep fan (the same people that bought the book) ALREADY knew; same stories he told on infamousstores.com where he even mentioned that he could write a book. The rest of those QB n!ggas need to just put out good music. If they can survive shootouts, fights, stabbings, robberies, dis tracks, more shootouts, BM drama, setting vehicles on fire, and beef over industry ish, they most certainly can survive a book.