a) Your stakeholders based on their level of authority (power) and their level of concern (interest) regarding the outcome of your project in a Power/Interest Grid.
b) Group your stakeholders based on their level of authority (power) and their active involvement (influence) regarding your project in a Power/Influence Grid.
c) Group your stakeholders based on their active involvement (influence) and their ability to effect changes to the project's planning or execution (impact) in a Influence/Impact Grid.
d) Use the Salience model to describe the classes of stakeholders based on their power (ability to impose their will), urgency (need for immediate attention), and legitimacy (how appropriate their involvement is).