I think it's safe to say, now that the story is over in such a rushed way, that Grimmjow, Urahara, Nel, Harribel (maybe), Yoruichi,and obviously, Yushiro are all dead.
When excluding Harribel and her Fraccion, pretty much everyone else got stomped by Askin. I doubt they survived his Gift Ball. Fans assume Nel went in to save them but... we never saw them again, not even in the last two chapters.
Urahara clearly died. He clearly said "this is the end of the road for me, good luck Kurosaki... and Kuchiki". R.I.P
Grimmjow, hyped or not, is definitely killed off. You'll never know what to expect of Kubo. He's quite a troll. There's no databook announced so we can't help but assume he's deceased. (He obviously was struggling to stay alive in the gift ball's magnifying power) R.I.P
I don't think Nel would've been able to save either of them by the time she got there.
I don't know but something tells me there's no way they're alive. Unless Kubo just completely forgot about them. Or if he was unable to feature him in such a rushed arc.
Except we never make assumptions on articles. And really, the only way we will add as such is if Kubo confirms it via databook at this point.
Do not get me wrong. Everyone pretty much wishes more exposition was given to cover the vague details like this. But there was literally no follow up nor any real indications or implications that would have at least given the audience information.
Could they all be dead? Yes? Could they be alive? Yes. Was there any real evidence produced that could steer us to draw a conclusion as to which scenario has happened? No.
The way this wiki is and always has worked is that we list information based on what was presented, not based on what feelings we have. We do not know if a databook is planned (I'm personally hoping it is), but if it's covered there, then we can go ahead and list details from it on here. But until as such, the articles are staying as is.
The new Bleach novel that was released in Japan, "We Do Not Always Love You" reveals that Yoruichi is still alive and is an instructor at the soul reaper academy, but information on the others has not been given.