Here are some terms to mute on Twitter to clean your timeline up a bit.

twittermute.txt

Mute these words in your settings here: https://twitter.com/settings/muted_keywords

ActivityTweet
generic_activity_highlights
generic_activity_momentsbreaking
RankedOrganicTweet
suggest_activity
suggest_activity_feed
suggest_activity_highlights
suggest_activity_tweet
suggest_grouped_tweet_hashtag
suggest_pyle_tweet
suggest_ranked_organic_tweet
suggest_ranked_timeline_tweet
suggest_recap
suggest_recycled_tweet
suggest_recycled_tweet_inline
suggest_sc_tweet
suggest_timeline_tweet
suggest_who_to_follow
suggestactivitytweet
suggestpyletweet
suggestrecycledtweet_inline

@abandon-the-flesh
Hey, I know it's sound like an ad, but I had the exact same issue and wanted to add lists of muted words because for some reasons Twitter only allow to add them one by one...
I created a small browser extension where you can enter a URL from github gist or pastebin and automatically add dozens of muted words. Check it if you want to (beta)test, I'm the only user right now and need some feedback ^^ https://www.chirpsilencer.com/

I can confirm this works on chrome! I I do recall getting caught up with a maximum number of words I could mute which is unfortunate. For now I finished adding my list manually, but I just thought I'd mention this to you and hope it looks for duplicates. Hope it works for Firefox eventually

Glad to hear it.

As far as the limit is concerned, it does exist within Twitter, which is a bit impractical...

As soon as I have a bit of time I'll start converting the Firefox extension. For the moment, simply transferring from one to the other doesn't work and will require a few adjustments.

Mozilla just approved the plugin https://addons.mozilla.org/fr/firefox/addon/chirp-silencer/

Need some tests because I had to change some key elements in it...