Sentence Correction (SC) | Re: Although quite powerful in his time, the 16th century

Although quite powerful in his time, the 16th century Russian czar Ivan the Terrible seems to us as a remote and barely visible historical figure.
to us as a remote and barely visible historical figure
to us to be as a remote and barely visible figure of history
to us a remote and barely visible figure of history
to us a remote and barely visible historical figure
to us to be a remote and barely visible historical figure

Can you please explain