People Also Ask is a Google rich snippet feature that provides users with additional information they may be looking for from their initial query. An example of this is searching for how to start a garden. The People Also Ask results that appear are questions that follow your original search.
Archer is not a proper Heroic Spirit in the sense of other heroes. His true identity is that of Shirou Emiya of an alternate timeline from that of Fate/stay night who made a contract with the world and became the Heroic Spirit EMIYA. He acts as a Counter Guardian for the world as payment for the contract.
Assassin’s True Name is EMIYA, the Counter Guardian Kiritsugu Emiya. An assassin who was incarnated as an agent of the Counter Force. Originally, he was not a Heroic Spirit. Although he was an individual who murdered many people as an assassin, his existence has not been engraved in the Throne of Heroes.