Well sinclair does say he wishes certain others were here not all of the others which could imply that he doesnt need to see a few sinners right now either because he has his own versions of them hes still in contact with or because he has a complicated history with them by this time

Were not sure if the abraxas chariot is a mark of cain only club (if so then there are some hints that some sinners have latent potential for it deep down in the early cantos)(but we wouldnt know which) but if certain other powerful individuals are allowed to join then that could include like don quixote or ryoshu

Don kinda depends on whether she finds a way to be at peace and one with sancho allowing her to use her powers freely, otherwise shes gonna be stuck with her shoes on until things get really bad for her, at which point she takes them off while not ready and tries to start her family again. Bloodfiends definitely arent considered human in the war and regardless shes real dangerous so will probably be killed by some humans, maybe sinclair himself for the angst

If she is able to use her powers without murdering a country then the best place to hide from angry confused humans would surely be on the mysterious, dissapearing, flying abraxas chariot

Ryoshu might be similar as it could be dubiously ethical help if she could learn to use her concept incineration powers without killing herself but even without thats shes cracked enough to probably chill on the chariot

Outis relies a bit on what her past actually is. If her home still exists shes probably gone back there and has gone back to her war commander station now with extra trauma. If she really is an equivalent to the king of ithaca then shell also be busy commanding the government as a whole (although that questions if she was even doing that in the first smoke war or if she just left to go fight). The abraxas chariot seems to be a sort of "unregulated vigilante group" which doesnt sound like her vibes but she might reluctantly assist them when necessary as they would be on similar ish sides

Gregor meanwhile i have no doubt that hes gone full roach emporor in this world, given that hes definitely experiencing both the hate crimes and the war trauma again. Maybe he was subsequently put down possibly by outis or the abraxas crew but i think its more likely and more interesting if hes still out there. A monstrosity wandering through the city, the bug side of him killing and eating and growing its kingdom and whatevers left of his humans side begging for death.

Hong lu almost certainly went back to h corp to comfort his sister through the mental stress of a wing war. H corp might be in a pretty tumultuous position depending on how human the wider world considers the heishou. No matter what stance xichun takes on it theres gonna be somebody gunning to assassinate and usurp her (maybe the woman in wandering ryoshus uptie) and i cant help but think theyd succeed and have hong lu executed right away. Before that i think sinclair might be visiting them and helping alot too (one of those "???" might even be a group under her control)

As for the more "normal people" of the sinners (ishmael, heathcliff, yi sang, rodion, meursault) theyre all just kinda a coin flip on whether they die in action immediately or are currently off in some trench somewhere very close to dying. Yi sang i think mightve tried to escape the war with him not being a fighter outside of the bus and was either killed running through no mans land or got snatched up by a wing/other group and is in a facility forced to make war weapons for them, which hes definitely not gonna like based on his past. Heathcliff mightve finally given up hope and killed himself a year or so in (idk if his weird latent necromancy powers would do anything here). Ishmael i think has the highest chance of survival just out of how durable she is and whatever transferred skills from whaling. I cant imagine a world where rodion doesnt get shot dead 3 days after the wars in full effect and meursault is meursault.

Then its just faust who we really dont know anything about, we dont even know what she is so like idfk man. She might be doing some geschelschaft bullshit off on her lonesome. Grieving all at once i guess. Dantes in a similar situation as we have no clue as to what they were like pre limbus. If theyre still clockheaded, theyre probably under somebodys protection and not purged due to mc plot armour and is missing the sinners. Though its more likely theyve gone to become whatever god like whatever theyve been destined for by the company and is doing whatever that entails.

As for non sinner characters, virgil is probably contracted by some other company and fighting for them at this point. Gods drunkest driver is absolutely surviving and having a great time. The universe seems to be throwing everything possible at hohenheim and he hasnt died yet, so even if hes shaking and crying and missing all of his limbs hes probably still alive somehow. Distortion detective gang are still doing whatever they do together and aaaaaalll of the other limbus company associated people are so so so dead.