The leader moves staff with a shared vision, inspiration and attention to each person's growth (Burns, then Bass). Staff change because they believe in the goal. Fits: a unit that has to rebuild purpose or absorb a large change. Watch: a vision with no follow-through on the schedule and the supply room.
Transactional
Clear expectations, rewards for meeting them and correction when they are missed, often by exception. Fits: routines where compliance is the point, such as checklists and documentation standards. Watch: it buys compliance, rarely commitment beyond the deal.
Servant
The leader's first task is the well-being and development of staff, after Robert Greenleaf's 1970 essay. Fits: retention problems, burned-out teams. Watch: putting staff first does not mean skipping hard feedback.
Democratic (participative)
The leader asks for input and shares the decision with staff, then owns it. Fits: unit councils, scheduling rules, practice standards. Watch: slow when the unit needs an answer this shift.
Autocratic (authoritarian)
The leader decides alone and directs. Fits: a code, a surge, a fire drill. Watch: as a daily habit it drives out the staff who could have helped.
Laissez-faire
The leader withholds direction and leaves decisions to the group. Fits: a self-directed expert group on a bounded project. Watch: as a default on a clinical unit, it is absence, not empowerment.
Situational
The leader shifts between directing and supporting as each follower's competence and commitment change (Hersey and Blanchard). Fits: a unit that mixes new graduates and veterans. Watch: misjudging a person's readiness, in either direction.
Authentic
Self-awareness, transparency and decisions that match stated values. Fits: a unit that has lost trust in its leaders. Watch: authenticity is a set of behaviors staff can see, not a personality claim.
Other models in the questions below include Goleman's emotional-intelligence styles, Fiedler's contingency theory and the Blake-Mouton grid.