The following list contains various operating systems and my opinions

These are my experiences below; YMMV

Any other distro or OS not mentioned was either not tested, or isn't worth using

Secure (SELinux, up-to-date packages)

GNOME first-class

Anaconda (installer allows me to set software RAID0 easily with GUI and allows for root/boot XFS filesystem)

Pipewire

SELinux is annoying on servers

Longest boot time

Long metadata refreshes

Reliance on 3rd-party repo for proper video playback

RPM Fusion's handling of the va/vdpau freeworld packages is too messy, doesn't inspire confidence, and I ideally would like to not need a 3rd-party repo altogether

Rolling

GNOME first-class

Installer (allows for root/boot XFS filesystem)

AppArmor isn't annoying

Various Wine packages (standard, staging, standard with nine, staging with nine)

Yast is nice for configuring the network on servers

LiveUSBs automatically have persistence even when dd'd directly to flash drives

PackageKit is super annoying (it doesn't honor trying to gracefully quit it)

May be as-annoying as Fedora with requiring a 3rd-party repo for multimedia playback, but I wonder if there's a smaller repo for essentials?

Good package selection

Good 3rd-party app support

Plenty of repos (PPAs)

Bleeding-edge graphics stack available (oibaf or padokaPPA)

Various 3rd-party kernel options available (xanmod, liquorix, official mainline packages)

Minimal Install option

Loads theses fonts fine

Nothing

Testing 22.04, but so far all is great!

Message sync between iPhone and macOS

30-bit color at 4K@60Hz

UI scaling (it somehow scales a lower res to a higher res while maintaining crisp text, and being compatible with programs not expecting this)

Better performance with windowed applications with eGPU on internal screen

Screen recording built-in

eGPU needs 3rd-party software on “unsupported” Macs (automate-eGPU)

Creating custom resolutions needs 3rd-party program (SwitchResX, which is paid)

Some games being bundled in Crossover/Wine instead of native

Some games have significantly lower performance (FFXIV, GW2, both RS and OSRS)

No built-in or free deep hardware diagnostics (temp monitor, CPU and/or GPU frequency)

Usable, but not ideal for gaming or hardware diagnostics in most cases

Memory testing programs (notably for Ryzen)

Best VR support for Oculus headsets (ALVR is pretty good though on Linux with a 6600XT)

Too-cryptic (power-user registry options require research, update notes are vague)

3rd-party software needs to be manually updated (winget is pretty decent though)

Windows Update will still butcher display drivers automatically in 2022; this behavior is incredibly dumb and time wasting having to DDU/clean WU's driver mess

Hotspot USB drivers for an iPhone will only download from WU with an internet connection; full Apple iTunes doesn't bundle it for some reason?

The song-and-dance to get Windows installed is timely (install without internet, SSU/CU, drivers, basic config, internet connect for WU, programs/games), and is dumb that the OS wants to be inefficient (outdated WU drivers with no option to block them; they're forced alongside the SSU/CUs) if left with an internet connection

Some Intel drivers (SST, Serial IO) require trial-and-error to get right

Consistently scores lower than Linux in Geekbench with a Ryzen 2700X, even with the newest 2004/20H1/19041 release and scheduler improvements

Configuration decisions are too one-sided; it's either disable all security and run with maximum game performance, or to allow full-control with whatever Microsoft dictates. WU drivers will present a good-enough experience for general users.

Good for VR testing, but too-annoying for a Workstation OS

The lack-of choices makes Windows a PITA