A common misunderstanding here, is that the sins you listed are "serious sins." For a serious sin to become a mortal sin, it must be done with full knowledge and consent of the will, without remorse, and with the deliberate intention of separating yourself from God. It is a persons level of culpability that makes a serious sin mortal, not just the act of it. Since we cannot know the minds/ hearts of other ppl, it is impossible to say whether a serious sin they committed is mortal or not because we do not know their level of culpability, and thus we do not know whether they are damning themselves to hell or not. That is why the Church does not claim to know that any particular person is in hell... even hitler.
"Of course, everyone will claim they respect someone who tries to speak the truth, but in reality, this is a rare quality. Most respect those who speak truths they agree with, and their respect for the speaking only extends as far as their realm of personal agreement. It is less common, almost to the point of becoming a saintly virtue, that someone truly respects and loves the truth seeker, even when their conclusions differ wildly."
-walsh
-walsh