Theorycrafting here, but when building a gauntlet, don’t you want to test what your deck might be weak to, rather than specific archetypes?
For corp side:
An assetspam deck (IG, Gagarin, NEH Temples), to see how your deck fares against passive pressure.
A glacier deck (RP, Foodcoats, Vegan Blue Sun) to see if your deck gets taxed out.
A rush deck (Titan rush, NEXT rush) OR a fast-advance deck (FastroBiotics mostly, but Titan FA or HB FA can) to see if you’re fast enough.
A dedicated meatkill deck (24/7 Convenience Shop, Titan rush with Meat threat) to see if you’re able to stay alive.
For runner side:
A lategame powerhouse (Nexus Kate, Haley BigRig, Stealth Andy) to see if you can win before they lock you out.
An econ-denial deck (Leela, Reina, Kim, your preferred flavour of Siphonspam) to see if you can withstand their merciless onslaught from turn 1.
An ICE-destruction deck (Noise with Clone Chips, Dumblefork, every Anarch ever) to see if you can win while your servers are being torn down.
A strong midrange runner (Leela, Andy, Valencia, Noise, most rogue decks that fall here) to see if you can deal with consistent pressure with no respite.
This will let you test your deck’s weaknesses, and in turn tune your deck to beat what beats you. In general, you don’t lose to a particular ID or play, but to an archetype. There are only so many ways to win at netrunner, so if you get beaten a certain way, figure otút why you lost, rewind and go again.