Who doesn’t like home runs? Pete Alonso has been arguably the best at hitting them among people not named Aaron Judge since his debut. The flaws with Alonso are that he made his debut at an older age, his hit tool nor his batting eye are particularly great, and his athleticism is towards the lower end of the spectrum. Naturally, teams are scared off by all those facts in free agency since teams are looking towards a future projection rather than what a player has done in the past.
That said...