The main principle of utilitarianism (beyond basic consequentialism) is that the consequences can be measured by some form of utility that can be objectively aggregated. That is, that there is some way to combine these utilities into a totally ordered “greatest good for the greatest number” instead of just considering all points on the Pareto frontier to be mutually incomparable.
The various types of utilitarianism can be viewed as specific means to define and measure the utility of various types of consequences, and variations in how to carry out the aggregation.
Not all consequentialism is utilitarianism.
The main principle of utilitarianism (beyond basic consequentialism) is that the consequences can be measured by some form of utility that can be objectively aggregated. That is, that there is some way to combine these utilities into a totally ordered “greatest good for the greatest number” instead of just considering all points on the Pareto frontier to be mutually incomparable.
The various types of utilitarianism can be viewed as specific means to define and measure the utility of various types of consequences, and variations in how to carry out the aggregation.