all the humans who were resurrected by elijah and elisha were not made perfect
they were brought back to life, but they were still "in death"
they were able to finish their short life course but they weren't truly "alive"
which is why they died again
jesus was different
when god resurrected him, jesus was changed into a different kind of being
he was firstborn from the dead in that sense
(he won't die again)
there haven't been any other humans made into spirits yet
all the "saints" who died are still sleeping in the grave at this point
when they are resurrected as spirit creatures, they will materialize bodies before ascending to heaven in order to interact with others, just like jesus did, for a witness