As many have said, there's more to this than just one type or the other. It might be worth considering taking a more intentional look at organizing teams around

As many have said, there's more to this than just one type or the other. It might be worth considering taking a more intentional look at organizing teams around similar circadian rhythms. Some of the most productive work I've done was with a team that really started gaining momentum in the afternoons and sometimes into the evenings. I think many who deviate far from the "norm" self-select into late-night service industry positions. There are a lot of misconceptions around "early birds" or "late workers" that could be explained by varying sleeping patterns.