This script tries to undo some of the most annoying changes in GMail's new version that cannot be changed in the settings.
< Rückmeldungen auf Gmail - Classic Two Row and less bold
I have seen switched to a CSS version that does the same things, see https://userstyles.world/style/10856/gmail-2-row-and-less-bold-v2. It should be preferable to this version
Still works.
Suggestion: Could this move the email's subject and content right of any labels (rather than below the labels)? As-is, each email occupies not two rows, but three!