Here is my browser tier list:
S:
• Mozilla Firefox (Hardened)
• Libre Wolf
• Tor
A:
• Brave
• Zen Browser
• Thorium Browser
• R3dfox (Windows Vista, 7, and 8.1)
B:
• Mozilla Firefox
• Superium (Windows XP, Vista, 7, and 8.1)
• Mullvad Browser
• Floorp
• Vivaldi
C:
• MyPal Quantum
• Microsoft Edge
• Pale Moon
• Basilisk
• Waterfox
• MyPal (Windows XP and Vista)
• GNU IceCat
• Ungoogled Chromium
D:
• Internet Explorer
• Apple Safiri
• GNOME Web
• Falkon
• Yandex
• Arc Browser
F:
• Google Chrome
• Samsung Internet
• Opera
• Opera GX
Am curious where you'd put Floorp and Cachy Browser; those two Firefox-based browsers, along with vanilla Firefox, are my daily drivers.