“Lazarus was not the first, there were a few in the Old Testament.”
Which just makes your logic all the more unsound.
“The point I make is that there is a physical resurrection of Christ and all who are in Christ are part of his resurrection.”
The physical resurrection of Christ and the resurrection of the righteous, also called the first resurrection, are two different events, that is made quite clear by Scripture.
“The second resurrection is a puzzle. Perhaps it happened already to Christ.”
It’s not a puzzle. Scripture explains very clearly that the second resurrection is the general resurrection of those who are not saved, and it is a resurrection to judgement, rather than to eternal life. It can never happen to Christ, because Christ is righteous, and besides, he was already resurrected. Nobody is resurrected twice, if you are part of one resurrection, you are not part of the other.