Disbelief in an immortal soul is one thing (and you have given examples of some such groups) but confusion may arise with the closely related belief of 'soul sleep'. It is also necessary to clear up what the word 'soul' means for those groups that disbelieve in an immortal soul, and those groups that believe the soul 'sleeps' in death until the time of the resurrection.
The Christian religion has always taken seriously what the pre-Christian saints said about a future resurrection of the dead. Here are three examples:
"I know that my redeemer liveth, and that he shall stand at the latter
day upon the earth: And though after my skin worms destroy this body,
yet in my flesh shall I see God; whom I shall see for myself, and not
another." Job 19:25-27 A.V.
"Thy dead men shall live, together with my dead body shall they arise.
Awake and sing, ye that dwell in dust: for thy dew is as the dew of
herbs, and the earth shall cast out the dead." Isaiah 26:19 A.V.
"And many of them that sleep in the dust of the earth shall awake,
some to everlasting life, and some to shame and everlasting contempt."
Daniel 12:2 A.V.
Everyone knows that the ancient Hebrew scriptures did not contain a developed doctrine of the resurrection, but those three texts alone show there was belief of a coming day when "the earth shall cast out the dead" who will live again and be judged.
Jesus' words explain everything. He was totally clear that it would be at the sound of his voice that the dead would come forth. It wouldn't be the voice of any woman's husband, or the voice of a prophet of old that would bring other people back to life. No. It is because Jesus has the keys of death and Hades, and has conquered the grave, that he alone has the God-given authority to raise all the dead. And it is, indeed, ALL the dead who must arise on the Day of Resurrection and Judgment, because that's what Jesus has said.
"Marvel not at this, for the hour is coming, in the which all that are
in the graves shall hear his voice, and shall come forth; they that
have done good, unto the resurrection of life, and they that have done
evil, unto the resurrection of damnation." John 5:28-29 A.V.
"Jesus said unto her, I am the resurrection and the life; he that
believeth in me, though he were dead, yet shall he live. And whosoever
liveth and believeth in me shall never die." John 11:25-26 A.V.
"I am he that liveth, and was dead; and behold, I am alive for
evermore. Amen; and have the keys of hell and of death." Revelation
God knows every living soul, and every dead soul, and all those who will yet become living souls before Christ suddenly returns to usher in the Day of Resurrection and Judgment. On that aweful day shall all the dead, "small and great stand before God; and the books were opened... And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them; and they were judged every man according to their works. And death and hell were cast into the lake of fire. This is the second death. And whoever was not found written in the book of life was cast into the lake of fire." (Revelation 20:12-15 A.V.)
That leaves nobody out of the resurrection. They are all given resurrection bodies in order to stand before God, and to go on to experience God's judgment of them - either in glory with Christ eternally, or in torments in the eternally burning lake of fire. They are not disembodied spirits once their spirits have been united to their new resurrection bodies. Those are bodies made fit for eternity, either in glory or in torments (see Revelation 14:9-11.)
For as long as there is any thought about "potential people" being mixed in with now physically dead people, the matter is confused. Those who have died do not cease to exist (as with soul annihilationist ideas). They do await a new resurrected body to be united to their spiritual part, in order to be judged and then go to what God has decreed for their eternal state. That is as clearly as I can put the mainstream Christian teaching.