TVG is a network that stands for Television Games Network. It is primarily focused on horse racing and provides live coverage, analysis, and wagering opportunities. However, based on the clue you provided, it is possible that there is another meaning for "tvg" that I am not aware of.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Family-friendly rating. Explanations are generated by AI and may be inaccurate.