Who are the canonically strongest Fallout characters outside of mary sue protagonists?

I'd say
>1: Frank Horrigan
>2: Legate Lanius
>3: The Puppet Man
>4: Joshua Graham
>5: Lou Tenant
>6: Marcus
>7: X6-88

but Arthur Maxson is probably somewhere in there too
I'm hesitant to list The Master because he's personally formidable but also immobile