I just received my invite code today and took a quick look around the app. Like Mastodon I do not prefer microblogging platforms. And that's all I know about Bluesky.
It's great if you liked old Twitter (2016ish) or you're a furry. It's very furry-heavy though because the furry community is very tight-knit and so invites got passed around like candy for a while.
Been my experience that mastodon is chock full of furries too. So much of it gets posted on the art centric server I’m on. Had to create multiple filters for it.