Magic: the Gathering Standard deck brews for Strixhaven update are usually found in popular MTG websites wherein they also present a whole batch of decklist in an article. One decklist that I will reference today is the one I found at MTGA Zone and the archetype is Selesnya Counters.
I usually encounter these colors as a powerhouse in the tokens strategy and I can attest when I played a similar deck back in Return to Ravnica Standard.
Going back, the deck got improved with a few Strixhaven cards and you can find the full list below.
Reference list.