Hey, for my recommendations keep in mind I did not use Linux as a main os for some time now. It is based on me following Linux channels and news, but also my past experience and installing it on my laptop and my brother's laptop.
Linux distros are different in the packages they choose to include for their environment, use and desktop.
Some distros offer different desktop environments (which are different desktop softwares, with different handling of included apps, settings and theming).
Depending on how well you know how to search online and not follow outdated advice, some different distros can be interesting :
Beginner friendly for Linux :
Linux Mint (cinnamon desktop)
Pop OS (gnome desktop)
Ubuntu (gnome desktop) (maybe, but I'd rather choose Pop OS due to snap packages of Ubuntu beeing forced and having lower quality compared to apt and flatpak)
All desktops can be themed. Tho cinnamon I don't know how well it supports modifying the task bar.
Gnome can have extensions to do things, show a bottom task bar, start button, start menu...
For these 3 distros, the system package manager used (installer, app searcher) is apt-get (shortened to apt). It is a well k'ow package manager with plenty of tutorials online.
All also include flatpak, which is a special package manager where apps Comme bundled with their own dependencies (software to make the main software work), and so reduce incompatibilities.
Ubuntu as a package manager called snap installed by default, it has the same objective as flatpak, but it is closed source, and already had issues with malware spreading through it.
Obviously all 3 package managers can have issues, as community is there to check the apps, but it may not always be safe.
The safest package source is still the system one apt as packages are checked by the people maintaining the main distro repo.
But many flastpaks and snaps are safe. (tho they can have some theming issues).
All of these 3 include a GUI store where you can search and install apps.
Another great distro which can work for beginner or advanced
Fedora desktop (gnome) (It is also available with the kde desktop).
Tho this one has a smaller community, and so there is less useful help online, and there may be more out of date advice you would have to navigate through.
Fedora has a pretty good documentation, but even that one seems to be a bit out of date on some things.
If you have an nvidia driver, this one doesn't have nvidia proprietary drivers installed by default nor help at the beginning on automatically installing them. You have to enable at install (or after in the store settings) the nvidia closed repo and install the nvidia driver from the store.
Kde as a desktop is pretty great, tho it can be overwhelming with all it's settings and options available to the user.
Gnome tho still requires an app to be able to control hidden settings like mouse acceleration and some other settings.
I wouldn't recommend other distros for beginner or someone who just wants to easy setup and work.
Debian is pretty stable even in its "testing" branch (Debian stable = old bur rock solid, not recommended for gaming. Testing = newish, still not breaking. Unstable = unstable) needs to have a manual install or help through someone's script.
Manajaro is a mess. On some devices it will work, on other it will just desintegrate after some months.
Or the communities are so small that packages may easily pass testing and break.
Between Mint and Pop_OS: recommendation for how to pick between them?
Coming from MacOS, haven't used Windows in a number of years.
If it would make a difference it's for a Lenovo Legion Slim 5 (Ryzen 7 7840HS; NVIDIA RTX 4060).
I want to dual boot, using the Windows side for gaming, for now, and Linux for other tasks.
Pop os = the desktop is closer to mac look. With extensions and settings with those, it can be even closer.
However keep in mind that Pop OS is developing their own desktop to get away from gnome (the name of the desktop environment(DE) (the bunch of apps and tools making the desktop and settings work)).
That new DE will most likely not be compatible with gnome extensions. And I don't know how it will look.
For functionality, both work pretty well.
Pop os has 2 ISO : one which includes the nvidia driver, and another without the Nvidia driver, should be easy to download the right one.
Mint I don't remember exactly how it works, but it should be easy enough to download and install the proprietary nvidia driver, either through a driver tool, or through the store.
Pop os has a gnome extension which allow you to switch from integrated gpu / hybrid / nvidia "only" directly from the notification menu.
to switch in mint, you need to open the nvidia control panel.
Both need a reboot or log out to switch gpu mode.
(keep in mind, the Nvidia gpu consumes a lot more than the cpu integrated one. In hybrid, nvidia gpus canot be put to 0w sleep yet, so it will still consume some power).
Both need a special argument for app launch or steam launch arguments to launch with the nvidia gpu if you set hybrid.
For boot :
Pop os bypasses grub (a Linux boot menu), so to choose the os to boot from, you'll have to either use your laptop's boot menu or the bios priority.
Mint has a grub boot menu displayed each time. So if you choose mint as priority boot, you can at boot still choose windows (about 5-10 sec to use the arrows to boot into something else than mint).
Disadvantage :
Pop OS still needs an additional app to be able to change all settings, including mouse acceleration (say thanks to gnome devs, theming has become harder to do for non gnome standard themes).
Mint : they only now made plans to develop their DE to support Wayland (a new window manager explained a bit further), and so you could have a bit less track pad fluidity (no 1to1 gestures
... ). Tho as the DE used is cinnamon, there is less use of track pad gestures.
About Wayland : it's a "new" windows manager (what allows apps to be displayed, and how they interact with each other). It is a hopeful replacement for X11 (released in 198X, before Linux...) full of issues but still working well for what it has to do.
Wayland wants to bring enhancements on security, gesture fluidity and many other things.
However it is not yet fully developed and you shouldn't really base your decision on it yet.
For the rest. I don't really remember other disadvantages as i don't really use them anymore.
Thank you for this comprehensive answer. It brought up some new considerations, but that's a good thing — like learning about Wayland, switching to/from use of gpu (which I didn't even know was a thing), and Pop_OS moving away from gnome. I appreciate that you took the time to write this full answer!
There is a lot to learn for Linux. Search engines are your best friend. Tho sometimes advice is outdated. There are also some discord servers where help exists, tho they also expect someone asking to do their research.
I mostly learned by YouTube, then doing research on Google and other search engines, on forums...
Discord servers were my last resort when I had some specific question.