I have no beef with your definitions, those are nice and consistent, but in practical terms I have trouble imagining anyone who, by your definition, wants more accountability. This seems to be asking for a harness and a whip.

On moving up the ladder while staying an individual contributor -- IME as one becomes the tech lead of larger and larger projects, the "tech" part shrinks and "lead" grows and the setup has a constant forcing function into a "manager in all but a name" setup. One might resist, but this is frequently a pretty hard push.