Spoilers and the BIG question

I will forever love this show but as far as I know we never got a concrete answer to who reddington is to Liz keen!!!). There was multiple times where we thought he told us who he was but than we would find out it’s not true(like Ilya koslav being alive after we’re already told that’s who he is to protect Katerina- or when we see the reddington daddy dna test to Liz as positive but than find out he is not reddington tho and is an imposter). Don’t get me wrong I like twists and turns in mystery’s but if you tease us for 10 seasons on who this guy is to Liz , YOU SHOULD give a solid answer! I have watched blacklist about 10 times throughout the years but after keens dies in season 8 I didn’t watch much after that so I think I might have not seen the very last season but as far as I can see on the internet they didn’t answer the question like the producer said they would🧐🤨 I guess that means he was overridden. To be honest I loved blacklist so much that I didn’t even realize they didn’t answer that question for a long long time cuz they have teased it so much you almost feel like you have gotten an answer until they turn it upside down into a lie everytime. If anyone knows who he is please lmk! I’m dying to know- also lmk if this is concrete or your “theory”. I did like the Katerina theory cuz I feel like it would make the most sense for them to be related -otherwise why else love her so much that he gets shot at for her and surrenders himself to the fbi and worst criminals ever? Also would make sense for why she would be in danger to know the truth cuz everyone dies to know reddington’s weakness and that would def be his daughter! It would put them both in danger. But of course there is some plot holes to the theory but not that big of ones to me - like why he sleeps with so many women-def still could but it seems unlikely that every single one he meets would want to. I still like the Katerina theory for it but I wish they would have TOLD US that that’s who he is!! Even if it was at the end of the show or when keen dies cuz then she wouldn’t be in danger anymore.