Broken Ownership
This is interesting!  Instead of thinking of people as being fixed in one of these archetypes, though, I think it's useful to think of a team as orbiting True Ownership -- with everyone needing to be nudged slightly differently.<p>I also might suggest alternates for some of the labels.  Specifically:<p>- I would label "Knowledge without responsibility or mandate" (currently labeled as "Coma") as "Critic": folks who know (or think they know) but don't have the mandate and aren't taking the responsibility are on the sidelines explaining why those that <i>do</i> have the responsibility and/or mandate are Doing It Wrong.  This archetype can be really annoying on a team -- but their lack of responsibility + mandate makes them less harmful than other archetypes.  In my experience, they need to be driven to take on more responsibility before they are given mandate.<p>- I would label "Responsibility without knowledge and mandate" (currently labeled as "Babysitter") as "Worrier".  This one <i>can</i> be helpful, but it can also result in tons of makework for those with mandate and knowledge.  This is not an uncommon pathology in nice people:  they know that they don't have the knowledge, so they don't seize the mandate.  This one needs to be guided to knowledge first, and then mandate.<p>- I would label "Knowledge and mandate without responsibility" (currently labeled as "Teenager") as "Technical Debtor": their lack of responsibility (often indicated, BTW, by a lack of long stints in their career) coupled with their knowledge and mandate makes them REALLY dangerous. Specifically, people that never live with the long-term consequences of their decisions can be blissfully unaware of the wreckage that they leave behind them.  These folks can be hard to steer -- and the ones that are <i>really</i> bad will resist it to the point that they would rather move to their next gig than take true responsibility.<p>That said, I love the other three labels -- and my career has been fortunately blessed with few firearm-bearing monkeys...