There's lots of Twitter users that have migrated here recently, and a good chunk of them have discovered the Mastodon Twitter Crossposter, which means your timeline is probably littered with sloppy looking retweets.
And you can rid yourself of them with this one simple filter:
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@ameliashowalter I am discovering that this isn't a perfect solution, but I'm working on improving the formula.
Seems not to work when you use the app...
Better than nothing tho.
@Alex I wish there were a way to filter out the RTs and yet also grant exceptions for a very few particular people who seem to be cross-posting responsibly 😁