Ilyas/Elijah

S 6:85 And Zakariyya and Yahya and Isa and Ilyas, all are of the righteous.

Are they all still alive?

S 37:123 And Ilyas is of the commissaries.

He's still a commissary/messenger?

Still a Messenger and Prophet?

S 37:130 Peace is upon Il Yasin.

Here the author has made the name plural. So three or more. How many men made/make up Elijah? Or were/are there multiple Elijahs?

Muslims like to say: 'Allah is one.' Is Ilyas one?

Further reading:

A Brief Note on the Names Ilyas, Isa, Yahya and Zakariyya