I don’t know if it’s the “most authentic” experience, but for a “pick up and play” setup, you might want to look into Emudeck (www.emudeck.com). It was originally made for Steam Deck, but has a desktop version now and it pretty much automagically handles setting up all your emulators. Plus, it integrates with Steam. Russ with Retro Game Corps has a installation guide on it: https://www.youtube.com/watch?v=05dunYi6hkY&t=1s
What’s galling is that big companies claim that the main reason for making people come into the office is to promote in-person collaboration. But, they constantly demonstrate that they don’t, in fact, value in-person collaboration. They organize people into cross-geography teams all the time to save money on hiring. So, you’re often sitting in a cubicle on a conference call with people on the other side of the planet that you will never see in the hallway. Or worse, you’re sitting in a conference room with a handful of coworkers, struggling to communicate over a crappy speaker phone with a handful of coworkers on the other side of the planet. They also frequently lay off entire product teams in one fell swoop. Decades of institutional knowledge that you might tap into during a water cooler conversation just disappears overnight. It’s hard to go along with all the extra real costs and pay the happiness tax that commutes and cubicle farms extract when it’s so obvious that the stated reason for it all is a lie.
Have you tried Itch.io? They have a lot of Gameboy and NES roms that are “Name your own price.” I don’t have any recommendations - I’ve just started poking around with homebrew roms myself.