Hi! Thanks for reaching out, and congrats on your project! Recreating the Sega Channel network is a great idea!
Of course you can use my freeware games and distribute them through your project. Or, as you requested: yes, NR Channel may include the unmodified ROMs above with credit for free, non-commercial distribution.
In addition to "Break an Egg" and "30 Years of Nintendon't", you might also be interested in my 3rd small Megadrive game, "Meteorain": https://drludos.itch.io/meteorain-gameshell-jam-1
Good luck with your project!
All the best,
Dr. Ludos.