I found this kind of interesting: https://www.scpr.org/news/2018/01/31/80361/lafc-teams-with-youtube-tv-to-air-local-soccer-mat/
I find it very interesting. It's the first time that a major league signs such a regional broadcasting deal, as far as I know.
Obviously nowhere near as significant, but Monumental Sports & Entertainment owns the Washington Wizards, Capitals, Mystics, Valor and Baltimore Brigade. They have made most non-Wiz/Caps games online exclusives.