Tweetbot if you’re on iOS. I’ve used it for probably close to a decade and nothing compares IMO. Always chronological timeline, no ads whatsoever, filters, mutes, etc. It’s just great. They recently moved to a subscription model (I know, I know) but it’s only like $5/year and way worth it. In the past, major versions were usually a $10-$20 upgrade price. Ever since they moved to this model the rate of updates and new features has really ramped up, too.
Yep, that’s what I’ve been using since the day I joined Twitter. I literally never use the site except to sign up and adjust account settings (like 2FA).
Harpy on Android is pretty solid. Nice UI and loads fast. I seem to have some issues viewing threads when navigating to them from a retweet but I may just be missing something.
on iOS, TweetBot is excellent. It has been the best iOS client (IMO) for years.