Install all-the-packages. It installs all Emacs packages, so you don’t have to research or make decisions (who has time for that?). Disk space is cheap nowadays, so a few TB’s of data isn’t anything to worry about (who has time for that?).
Instead of wondering about what everyone else is using, why not try each one and see what works for you? Ultimately, that’s all that matters.
New to Emacs doesn’t mean “new to life”.