Board Thread:Administrative/@comment-1713281-20190509171612/@comment-24800939-20190509182117

My answer to this has two versions depending on your definition of canon, everything Marvel has ever published is canon, its all a different reality in the multiverse. So if your question is what do we care to include and give a TRN or reality designation to, my answer is simple. Anything that Marvel has published that isn't a licensed adaptation of something another wiki would be better suited for (Alf Vol 1, Barbie Vol 1 etc) that has no known connection to an already established reality and somebody is willing to add all the details, then go for it.

If your asking canon to 616, (esp.Tales of series) my thought has always been in the line of if Marvel (or Timely or Atlas) published it and it contains nothing explicitly contradicted by future events then its canon to 616. Prime example of this I know that people keep trying to add to 616 is from Amazing Adult Fantasy Vol 1 7. To tl:dr, the story doesn't seem to take place on 616 because the earth is abandoned at the end and humanity settles on a new world. In comparison your John Lang example involves ghosts, something which have existed on 616 afaik.