Note that this is a beta release. To use the stable version, go here: https://greasyfork.org/en/scripts/485622-startube

Requires Vorapis 2013 (V3) to function. Get it here: https://vorapis.pages.dev/

StarTube is the official successor to CustomTube, allowing you to use the 2008-2024 YouTube layouts. It also has several other options to further tweak the layout to your liking.
Settings are accessed from the Tampermonkey menu that appears when clicking the Tampermonkey button in your browser's toolbar.

Make sure to disable the regular version of StarTube before using this one (and vice versa).

Current version is 2.4.2 (same as stable release).

StarTube has a GitHub page now: https://github.com/lightbeam24/StarTube