Kvaesitso has tags. Each app can have multiple tags, and selected tags can be pinned (somewhat like a tab) to favorites, possibly resulting in something a bit like drawer tabs? You can also use the search bar to search for a tag and list the tagged apps.

I use tags like #stream #media #video #audio #download #p2p #torrent #tools #navigation #maps #transport #social #chat #messenger #sms #appstore #files etc. and often I add multiple relevant tags for better brainless searchability, though only a few general useful tags are pinned to the favorites section (e.g. #stream #files #chat and #tools).

Pear Launcher has them but calls them "App Groups". But as I said, the missing piece is to hide them from the main tab when they have been added to another tab

Same here - I heavily rely on drawer tabs, and it's a very under-implemented feature across all of the competition.

Octopi and Smart Launcher also have tabs.