Red Siths and Yoda’s race
When I started watching Mandalorian I was already pretty deep into SWTOR and I read a bit too many articles on Wookiepedia about the times even farther in the past than The Old Republic.
That knowledge obviously had later went into use when I saw Grogu and started thinking about the race Yoda, Yaddle and Grogu come from. The natural conclusion to which I came is that they must be an ancient species as there are not many of them in the Movie Era, and they have naturally very long lifespan (which the existence of Grogu put into perspective if he is 50yo, and he is still considered a toddler and can't yet speak, only able to communicate telepathically via the Force with other force users - which may imply that Yoda species is only able to communicate this way when young and at the same time establish them as majorly force-sensitive species just like Red Siths). Their natural strength in the Force was then established by the fact that all 3 representatives were forcesensitive and the fact that Yoda's midichlorian count was supposedly the highest until Anakin - artificialy made child - came into the picture and kicked him off his pedestal when it comes to the count alone.
It's also very interesting that Yoda, Yaddle and Grogu are all more prone to be drawn to the Light Side, though Grogu showed some signs of being tempted, but in this case even Yoda once said that he felt the pull of the Dark Side, so it's probably just a normal thing. Still, the preference for the Light may imply that they are one of the few races in the SW lore that are born attuned to the specific Side of the Force. Which brings me all the way back to the Red Siths and their natural affiliation to the Dark Side, because they are born attuned to it.
Attunement doesn't mean you can't use the other side obviously, but it definitely affects how you view the side you are attuned to - it’s natural for you to view one rather than the other as normal as it's part of you, your whole genome and your whole species. It also may imply some way of natural resistance to the negative effects of the Force like Dark Side corruption. I barely ever saw any Red Sith that could be considered "fallen" by the Jedi standards. Hell, we mostly met former Jedi who had "fallen", which brings me to the conclusion that if you are born attuned to the Dark Side, there must be some benefit to it. Siths also don't tend to shut down their emotions, which greatly influences their relation to the Dark Side, as bottled up emotions and unresolved traumas can affect the person in such a way that they will fall into the Dark Side with no control over it. Lana Beniko is my favorite example of a Sith to give here, because she is simply pragmatic, not evil. She considers killing in some situations just more beneficial than not. She is reasonable, she doesn't cackle like fallen Jedi, and she in general can be seen as sane and even caring.
Anyway, what brought me here is the idea that Red Siths are scarce or nonexistent in the Movie Era, which is understandable considering that they were 1% of the Empire's population already during The Old Republic Era. Still, they may have been aware of the existence of the species that Yoda is from, due to both being ancient species attuned to the Force. Maybe even both of them were the first species to study the Force on tython when those weird high-tech pyramids descended upon their worlds and then took them straight there?
Tenebrae's birth on Medriaas also implies that Red Siths existed not only on ancient Korriban, but also on different planets like Medriaas and Ziost that establishes their access to space travel as far as 5000BBY or farther. That means that knowing Yoda's species personally may have been very easy for them, especially if they met during some wars. I just like to think that if our Pureblood Siths ever met someone from Yoda’s species, they would be like “oh, it’s you!”
