How many of the 26 reincarnators are known and what are their status at the time of the S series? In the Kumo storyline, 26 creatures reincarnated:


   24 students, 1 teacher and 1 spider (that received the human memories of the 26th student, that was Admin D in disguise).


Besides the eponymous protagonist, who where the others, and how are them at the time of the S series?
If someone wants to do a proper answer with specifics or has corrections, they can, but I can give a rough summary for now and maybe later reread some chapters and get the specifics.

This wont be perfect timeline wise either. I assume by S series you mean the side stories which start off with the reincarnated babies, then I will go a little farther than that, to the point where they are young teenagers or so, since some details I forgot or are ambiguous on the timeline until then. 

For manga readers at least, this will be full of spoilers from the light/web novel, since this is all after our spider MC leaves the dungeon.

2-4 of them


   died while young and are not important to the story. It was at least 2, but up to 4. I don't recall specifically, and i believe the skill used to say they were dead might have been wrong about one or two of them, but its been a while and I don't remember nor have time to confirm right now.


2 of them 


   were born in one of the major kingdoms, including one of them being a prince and younger brother of the one with the hero title, and the other a boy being reborn as a girl.


Another one was 


   born as the next in line for the strongest swordsman


And all 3 above were sent to the same school, along with the Teacher, who


   was born as an elf, the child of the leader of the elves, though I recall it was a bit more complicated than that.


2 were


   born in a small village and became adventurers together after it was destroyed and everyone else killed.


One who became a major character was


   born in a town as the highest ranking vampire possible, to the local Lord of the land, and our MC meets her as a baby shortly after leaving the dungeon.


Another Major character


   Was born as a goblin.


The 2 above joined the MC and going further into detail why/when is heavy spoilers

Most if not all of the rest were 


   kidnapped by elves and raised in their village, isolated from the world. A few of them were raised elsewhere still ended up in the elves village, like one from the church I believe it was.


That is at least 20-24 of the 27 of them accounted for, but I can't recall any more right now.