What happened to the X Rating?

cinema history - Why would a movie that appears pornographic via it's rating (X) receive an Academy Award? - Movies & TV Stack Exchange

8 Provocative Facts About the X Film Rating

File:X MPAA.png - Wikipedia

Saw X' Is The Most Well-Reviewed Saw Movie Ever, By A Huge Margin

MOVIE 'SCARFACE' RECEIVES X RATING - The New York Times

The Ultimate Guide to Electric Scooter IP Ratings - Rider Guide

X-Files IMDB Rankings : r/XFiles

RetroNewsNow on X: 🎬On November 1, 1968, the Motion Picture Association of America's film rating system was officially introduced with the ratings G, M, R & X / X

NHL Players React to their NHL 22 Ratings ft. Patrick Kane, Jack Hughes, and Steven Stamkos

Scully, you're not gonna believe this — The Most Watched Episodes of The X-Files according