Jn 3:16 says nothing about being clearly all men ! If the world in Jn 3:16 is clearly all men without exception which you have failed to prove with scripture, then why did Jesus Christ refuse to pray for them? As their Saviour Surety He would have been obligated out of Love to Pray for them !
And world means Elect , the Sheep !
Ok, I'm tired of you misusing world as the elect, the sheep. You asked for it.
(Matthew 5:14) You (the elect, sheep) are the light of the world (all men). A city that is set on an hill cannot be hid.
(Matthew 13:38) The field is the world (all men); the good seed are the children of the kingdom (the elect, sheep); but the tares are the children of the wicked (the lost).
(John 1:29) The next day John saw Jesus coming unto him, and said,"Behold the Lamb of God, which takes away the sin of the world (all men)."
(John 7:7) The world (all men not of the elect,sheep) cannot hate you (the elect, sheep); but me it hates, because I testify of it, that the works thereof are evil.
(John 14:17) Even the Spirit of truth; whom the world (all men not of the elect,sheep) cannot receive, because it (the world) sees him not, neither knows him: but you (the elect, sheep) know him; for he dwells with you, and will be in you.
(John 15:18) If the world (all men not of the elect, sheep) hate you (the elect, sheep), you know that it hated me before it hated you.
(John 15:19) If you (the elect, sheep) were of the world (all men not of the elect, sheep), the world would love his own:
but because you are not of the world, but I have chosen you out of the world, therefore the world hates you.
For lack of time this is not an exhaustive compilation, but it is clearly enough to show that the world and the elect, sheep are not the same. Context shows that the world is one of two things; either all men, or those who
are not the elect, sheep.
You must dont realize what the word World means ! Its the greek word kosmos and means a gathering or collection of particuars !
I.an apt and harmonious arrangement or constitution, order, government
II.ornament, decoration, adornment, i.e. the arrangement of the stars, 'the heavenly hosts', as the ornament of the heavens. 1 Pet. 3:3
III.the world, the universe
IV.the circle of the earth, the earth
V.the inhabitants of the earth, men, the human family
VI.the ungodly multitude; the whole mass of men alienated from God, and therefore hostile to the cause of Christ
VII.world affairs, the aggregate of things earthly
A.the whole circle of earthly goods, endowments riches, advantages, pleasures, etc, which although hollow and frail and fleeting, stir desire, seduce from God and are obstacles to the cause of Christ
VIII. any aggregate or general collection of particulars of any sort.
A.the Gentiles as contrasted to the Jews (Rom. 11:12 etc)
I have taken the liberty to emphasize your admission of being wrong about the world being the elect sheep, in the definition you posted.