I always found it strange that the standard view usually depicts Lanthanum + Actinium on the main block and Lutetium + Lawrencium on the auxiliary. I suppose historically it makes sense that valence was the motivating factor, but at my (totally layperson at this point) glance, the pedagogy seems like it would be simpler to just adopt a more electron-orbital-focused design like the "left step" one.

In any case, it's not like anyone should really be looking at the table placement of an element say to themselves "ah yes now I know everything about how this behaves"; the exceptions are basically an intractable necessity in chemistry.