People search for an official site because the trend spread fast. This page keeps the context in one place and points you into the local test flow.

Navigation intent usually means people heard about SBTI somewhere else and now want the quickest safe path into the experience.
A navigation query often means the user saw screenshots first and wants the source context next.
The best answer is a clean entry page that explains the format and gets them into the quiz immediately.
Official-style entry pages work better when they also explain type pages, rankings, and result sharing.
Good navigation pages keep the user in the local flow instead of bouncing them back out.
A few answers for people who arrived here from a navigation query.
The fastest way to understand SBTI is to finish the test, then browse the type pages from your result.