I don't really like the axes Mort/Elvis/Einstein are on, they all seem like obviously pathological examples.

I think if I were to make three strawmen like this I would instead talk about them as maximizing utility, maintainability, and effectiveness. Utility because the "most business value" option doesn't always make the software more useful to people. (And I will tend to prioritize making the software better over making it better for the business.) Maintainability because the thing that solves the use case today might cause serious issues that makes the code not fit for purpose some time in the future. Effectiveness because the basket of if statements might be perfect in terms of solving the business problem as stated, but it might be dramatically slower or subtly incorrect relative to some other algorithm.

Mort is described as someone who prioritizes present business value with no regard to maintainability or usefulness.

Elvis is described as someone who prioritizes shiny things, he's totally a pejorative.

Einstein is described as someone who just wants fancy algorithms with no regard for maintainability or fitness to the task at hand. Unlike Elvis I think this one has some value, but I think it's a bit more interesting to talk about someone who is looking at the business value and putting in the extra effort to make the perfectly correct/performant/maintainable solution for the use case, rather than going with the easiest thing that works. It's still possible to overdo, but I think it makes the archetype more useful to steelman the perspective. Amanda sounds a bit more like this, but I think she might work better without the other three but with some better archetypes.