Possible Clues:

• Rating for non-kid shows
• Rating that may signify profanity or violence
• Rating for 'P-Valley'
• Rating for risqué shows
• Rating for HBO's "Westworld"
• "For adults" small-screen rating
• Rating for 'South Park'
• Risque show's rating, perhaps
• "True Detective" rating
• 'True Detective' rating