Trending Hot -- Reality TV took a battering in the 2010's thanks to trends reverting back to scripted fares, but The Masked Singer shoved the pendulum the other direction. Promisingly, American Idol's revival and existing and respected franchises The Bachelor(ette), Survivor and the Voice bounced back to higher ratings. CW rarely sets hot trends, except they refused to can one single show. Instead, they declared final seasons for aged and weakened shows, allowing them to end with proper notice and celebration. Sports ratings remained strong, though down like everything else. Best not to blame the kneel/squat/sit/lie down/lie flat controversy as everyone went down deeper this season. As seen by rankings 46-146th Place, series ranking in fractional territory became common sites.
Trending Cold -- Revivals may have been the rage the prior season, but they were gimmicked out not too long after. Blame Roseanne's moods on Twitter, but revivals collapsed. Magnum PI debuted to underwhelming results, Will & Grace crashed, The Conners only survived due to controversy and Murphy Brown never stood a chance as it debuted soft and was filibustered as it complained too loudly about the POTUS.
Source -- https://www.hollywoodreporter.com/live-feed/ratings-broadcast-network-series-2018-19-1213344