Sort of begs the question, which team(s) read the market well?
You can't just pick a team that sucks or is always cheap.
Scrolling through the signings by team, seems like most of them who spend anything have a few earlier signings that they may regret.
I guess you can say the Cubs did well getting Imanaga for his money and waiting out Bellinger. I don't see any other obvious winners though. And even with the Cubs, their actions may not have been prescient; they have been surprisingly cheap in FA for a few years, much to the chagrin of their fans who want them to operate like a big budget historic powerhouse franchise. So, maybe them "reading the market well" is just luck.