What are all the different species of intelligent beings that God has created? According to scripture, what intelligent life has God created in addition to humans, angels, and demons? One example I can think of are the 4 living creatures talked about in Revelation. Then there's Cherubim, Seraphim, etc... Is there anything else?


  Revelation 4:6-8 ESV And around the throne, on each side of the throne, are four living creatures, full of eyes in front and behind: the first living creature like a lion, the second living creature like an ox, the third living creature with the face of a man, and the fourth living creature like an eagle in flight. And the four living creatures, each of them with six wings, are full of eyes all around and within, and day and night they never cease to say, “Holy, holy, holy, is the Lord God Almighty, who was and is and is to come!”


I'd love an answer that contained the creature, where they're mentioned in scripture, and what we know about them or what they do. I'm fine with considering the prophetic visions of creatures because we don't know if those are to be taken literally or not.



Edit: I expanded the wording of the question just a little bit.
The Four Living Creatures in Revelation are also described in Ezekiel 10, when he has a vision of the Cherubim - which are either heavenly beings and/or angels depending on who you ask:


  And every one had four faces: the first face was the face of a cherub, and the second face was the face of a man, and the third the face of a lion, and the fourth the face of an eagle.


Also, to my understanding (at least in Revelation) these creatures are supposed to represent the Four Evangelists - Matthew, Mark, Luke, and John.

Depending on your denomination and what you do or do not consider scriptural, in Mishneh Torah or Yad ha-Chazakh we have the following:

Chayot ha-Kodesh - Ezekiel Chs 1-10 (creatures)
Ophanim - also in Ezekiel Chs 1-10 ("wheels")
Erelim - Isaiah 33:7
Hashmallim - Ezekiel 1:4
Seraphim - Isaiah 6
Malakim - regular angels/messengers; seen throughout
Elohim - "godly beings" (this is why the Lord is typically called Adonai Elohim)
Bene Elohim - the sons of God/godly beings
Cherubim - we see them throughout the Bible.
Ishim - manlike beings in Genesis 18:32 and Daniel 10:5
Nephilim - sons of the fallen angels (sometimes called "Watchers"). They were giants created after the angels exchanged in relations with human women.

*note I used Judaism as the reference for the names