Kind of unrelated but here is Windows 10 Enterprise LTSC 2019 skinned to look like Windows 7 with Vivaldi for getting the pre-51 Google Chrome style and ReHike styled to look like
Windows 10 Help Forums
How to Enable Windows 7 Aero Glass in VirtualBox
Aero10 for Windows 10 1903-22H2 by vaporvance on DeviantArt
black titlebar when using aero glass (windows 10 1809) | WinClassic
Aero Frost for Windows 10 - Enable Windows Theme Customization
Aero Glass and transparency for Windows 10
Aero Glass and transparency for Windows 10
create full glass themes from windows 7 to windows 10
Windows 7 Aero Theme For All Windows 10 - Cleodesktop
Acrylic Title Bar in File Explorer - With Glass8! : r/Windows10
Windows Developer Preview Pack for Win10 1809 LTSC by Jose-Barbosa-MSFT on DeviantArt
Topic: Make Windows 10 look and work like Windows 7 @ AskWoody
Aero Glass for Windows 8, 8.1, and 10 (and full glass8.eu crawl) : Big Muscle : Free Download, Borrow, and Streaming : Internet Archive
Windows 10 Help Forums
Aero Glass 1.5.13 For Windows 10 (1703-1909) - YouTube