*Edit* Whoa, I really didn't expect this to be so long
Ok I've thought a lot about you've been saying and trying to see your point of view. And before you spit anymore nonsense about genealogy note that I took some of those classes as science electives at ECU, so I'm not someone who's new to the subject, which is why I was trying to point out to you the flaw in your diagram (which you refuse to listen), I just didn't say anything because I don't think bragging about my educational background makes me more of an authority on a fictional cartoon. But I saw in one of your posts that you said "I can't ignore facts" so I will give you facts from both real life and the manga in a sensible manner and see if you actually address them.
First of all I now believe that your theory is ALMOST correct, but it doesn't cover one major flaw.
FACT: Uzumaki and Uchiha have nothing in common. Nothing. This goes beyond the sharingan. Uzumaki and Uchiha have not been shown to have any resemblence in chakra, skills, specialties, or anything. Yes, they share a common anscestor with the sage, but FACT: the senju and uchiha are both direct lineage of the sage, and FACT: the senju and uchiha also have nothing in common dna wise besides the connection of the sage. Beyond this, they are two completely different clans. FACT: The Uzumaki and Senju share a lot of similiarities in chakra and specialties, but the Uzumaki do not share anything with the Uchiha. So your statement that Uchiha dna lies somewhere within the Uzumaki is more baseless than you would like to admit. Your diagram makes up for a lot of your theory, but it doesn't account for this simple, yet powerful flaw. This isn't something you can overlook.
Look at your diagram one more time to understand what I'm saying. On your tree of life, you have Uzumaki, Senju, and Uchiha. You have Uzumaki as the main, or "untainted" branch. Then you have Uchiha and Senju both branching from that. So far this falls in line with your theory, until one mistake you make. You highlight a personal connection between the Uzumaki and Senju, and say they share a common ancestor, yet you say nothing about the connection between Uzumaki and Uchiha. Remember, it's a FACT: Senju and Uchiha share the same sage lineage directly, since their clans come directly from the two sons. This is proven in the manga, you can't ignore this. It means the the uchiha lineage is just as potent as the senju lineage. So for your theory to be correct, all three would have to share that same ancestor, yet you highlight and connect only two in your diagram. You claim to have taken genealogy classes, so this should be easy for you to understand. This still doesn't disprove your theory entirely ofcorse, because you could just as easily go back and change your diagram.
Let's dig even deeper into the relationship with the Senju and Uzumaki. You said that Uzumaki had powers that the Senju do not. You are correct, but you fail to realize that the Uzumaki powers are watered down versions of the Senju, implying that the Senju came first. In the manga, it has been stated numerous times that the bloodline of Uchiha and Senju thinned out and they got weaker as more and more mutations starting occuring. You also point out that Uchiha can control the tailed beasts. Keep in mind that Uchiha can control tailed beasts WITHOUT having to be their hosts. I will give you two facts you haven't considered so far. FACT: The Senju can also control tailed beasts WITHOUT having to be their hosts (ex: hashirama). The Uzumaki can't control tailed beasts, their chakra can ony supress tailed beast chakra. Just in case you wanted to site Naruto on this, note that Naruto never ended up controlling Kurama. He simply befriended him. The Senju had the ability to control the beasts' will, just like the Uchiha had the abilitiy to control the beasts' mind. So if Uzumaki are the original bloodline, and we know from the manga that the bloodlines got thinner and weaker, how is it that we go from Uzumaki being able to only supress tailed beasts chakra, to senju and uchiha being able to supress tailed beasts as a whole? The fact that the Uzumaki have a lesser ability to contain the tailed beasts adds weight to the idea that they came last and are a result from the blood thinning the manga talks about. Another thing to point out is that the healing abilities of the Senju were far more advanced than the Uzumaki as well. Uzumaki have lots of life energy and good healing abilities, but the senju were known to be superior in both of those aspects. Also note that the Senju were experts in sealing as well as the Uzumaki, and were probably superior.
The manga has expressed numerous times the connection between the Uzumaki and the Senju. It has never shown a single connection between the Uzumaki and Uchiha. This is another thing you can not simply ignore. And unless the Uzumaki and Uchiha share something more than simply having the sage as an ancestor, your theory can not be taken as valid because that lineage will only be contributed to the fact that the Uzumaki are probably "from the senju lineage" (quote from the manga) meaning that they are a branch of the senju so they share the sage ancestry, just more distant. REAL LIFE FACT: If your dna lies within an ancestry, you must share atleast one trait or commonality. Whether that be hair, skin, health conditions, skills, something. If the Uzumaki and Uchiha have nothing in common, then it is simply invalid for you to say that the Uchiha dna lies somewhere within the Uzumaki. No, the Uzumaki can't be a catalyst for Uchiha dna, because there would be atleast ONE thing noticable between them. Also, almost all of the Uzumaki's traits are weaker than the Senju traits in common, and the Uzumaki haven't been shown to have any superiority in anything over the Senju, which contradicts your theory since we know the bloodline got weaker with age, so whoever came first had to be stronger.
I hope you read this, and I hope whatever response you can come up with will actually address these facts since you said yourself you can't ignore them. I'm not expecting you to abandon your theory. Like I said, you are almost correct. But if you don't atleast change your diagram a bit (I've clearly shown you in great detail why it is errored) then I will know from that that you aren't someone to be taken seriously