hey, just wanted to say welcome to cafvol99. if you are still located in east tn, i'm a bit west of you on the plateau.
not sure from your posts if artifact hunting is a hobby for you, but Tennessee is definitely a great place for it. six or seven years back i found a beautiful point, freshly broke in half. not by a plow, but by that mornings deer traffic. which rekindled
.......... a childhood growing up on the bluffs, finding points and flakes. family didn't have a tv.. until i was in sixth grade..times previous to that (in retrospect), were some awesome years. making animal traps/bows/arrows/spears/clubs.
.......cooking killed creatures on little fires.
always hoping..

my grandfather's research into our ancestry/genealogy would uncover some lost Native American branch of the family tree. obviously so i wouldn't be a poser singing
but i digress..
some members have a huge amount of knowledge, gathered over decades in the field. that knowledge and experience is something i personally really have appreciated on here, and other forums.
seems upon reaching that level of expertise, it's easier for them to appraise an object with a high percentage of personal certainty.
I can't personally say anything 100%, specially over the web w/ pictures only.
i will say: seeing posts from my neck of the woods is always great. local/regional comparison of finds is very compelling.
looking at the first post some of the cracks and crevices on the point appear to hold greenish build-up (in that group, the second picture is a good example using the magnification function) .
in later pictures you (op) have cleaned the point a bit more ? the stuff that i'd associate w/light to moderate creek time for our area looks to be wiped off . so, was your initial discovery something freshly eroded or in a waterway with minimal flow?
any ways. hope you figure it out. Tennessee has some wild flint/chert types. if you work on identifying the material that it is made of, it will be very unlikely your question won't be answered.