Kbin has upvote, downvote, and boost. Boost comes from the microblogging side, kbin does both content aggregation like Lemmy and microblogging like Mastodon. On the content aggregation side boost counts as 2 upvotes and it functions as normal for the microblogging side. Kbin.social is the only Kbin instance I used, I expect that it works the same on other Kbin instances and on Mbin but I don’t know for sure.
Kbin has upvote, downvote, and boost. Boost comes from the microblogging side, kbin does both content aggregation like Lemmy and microblogging like Mastodon. On the content aggregation side boost counts as 2 upvotes and it functions as normal for the microblogging side. Kbin.social is the only Kbin instance I used, I expect that it works the same on other Kbin instances and on Mbin but I don’t know for sure.
I use MBin and it works pretty much as you described, it has upvote (similar to Mastodon like) and boost (similar to Mastodon repost)
Both upvotes and boosts are public on Mbin, but downvotes aren’t (to prevent harassment)