Being challenged by hypothetical scenarios.
They work as a team but not in a vacuum. They have a pretty good balance of communicating decisions and accepting feedback.
Leadership willingness to listen and act upon employee feedback. Accomplishments are celebrated across the entire team, i.e., a "we" not "me" culture.
Mutual support and empathy. Conflict is not avoided but is managed constructively for the greater good. All opinions are respected. Growth mindset and natural curiosity about new technologies and how they can be most effectively leveraged by our clients.