Ive got hundreds of these damn movies on my Plex server specifically because my wife LOVES this crap.
I'm convinced we have a Family-Guy-Manatee-Ball-Pit situation going on here. There's less balls to choose from, but damn if I haven't seen "save family business with a last minute impromptu charity event spurred on by the handsome dude from her past who posseses some talent" 100 fucking times.
They aren't usually direct plot copies, they just have identical pieces that get moved around so they can factory farm these bitches out.
He also forgot the silly, but loveable sidekick best friend of the romantic interest who is irrelevant for the whole movie, but helps to save the day in the end (and sometimes gets it on with the very serious sidekick best friend of the main character).
Fun game: see how much of the set is used in other movies. Most of the Hallmark movies are made on the same set in Atlanta so some will share little things like the same staircase or same exterior of a house. Hallmark reuses more than just the plots!
There's an episode of South Park where they go to the writing offices of Family Guy for whatever reason, and instead of actual writers, they have an aquarium tank full of manatees and plastic balls with words on them.
The manatees would bring the balls to the top of the tank, few at a time, and the staff would use the words on the balls as prompts for their new jokes/episodes.