I thought this list Denk put together is pretty great. It’s his personal favorite of each authoring system he’s tried, and there’s 27! Pretty cool.
Hey, still some categories ripe for the picking, either because they’re not on the list yet or because there are so few available games!
Inform 5’s gonna put you against heavy hitters like Plotkin and Graham, and it might be tough to beat lft on his home Dialog turf for a while yet, but in the Scott Adams-verse you’ve only got a few dozen games of dubious quality to contend with!