Yeah that's true. He distinguished his opinions about Slavs, for example he had a degree of respect for white Russians whom he often compared to ukrainians that he considered animals like monkeys. Yes, ukrainians served in the Waffen SS, but so did for example Indians, and for Hitler this wasn't different than the allies using negroes in their armies. He also considered central Slavs better than eastern Slavs. You can look at Slovaks as an example of a slavic nation that allied itself with Hitler and remained relatively unscathed. Whether the same fate was possible for Poland is different to say, since that ship has sailed in 1935 with the death of Poland's leader Pilsudski, whom Hitler respected very much and who was the only man who could have pulled off a German-Polish pact had he lived longer.
No, Hitler did not consider all Slavs to be untermensch. Untermensch was not even a strictly racial concept.
What even is sub-human? It's basically someone who loses respect for "god" and parents. Moralists (distinguished from ethicists) who come to despise life and nature, resort to slander, accusations, and projections to compensate for their own inherent inferiority.
From Mein Kampf: "He now even black-guards that broken-hearted being who gave him birth. He curses God and the world and finally ends up in a House of Correction for young people."
In the Table Talk, he states in two separate instances, "An uneducated man, on the other hand, runs the risk of going over to atheism (
which is a return to the state of the animal)" and "Secondly, the respect that youth owes to maturity. If this respect is lacking,
a man falls below the level of the animal."
Also, in Mein Kampf, he used this expression to refer to anti-racialists: "Loaded with the burden of human sentiment,
he falls back to the level of a helpless animal."
This is all consistent with Hitler's earliest views on untermensch as revealed in Werner Maser's Letters and Notes.
Among the Slavs, Hitler mainly distrusted Poles and Czechs, perceiving them to be stubbornly nationalistic and accused them of refusing to assimilate. In the Table Talk, he ranked Latvians as the lowest while esteeming Estonians. Thus, it is perfectly untrue that he preferred central Slavs over eastern Slavs. Curiously, he mentioned the Chinese alongside the Latvians in carrying out Bolshevik atrocities (omitted from the English translation but included in Werner Jochmann's rendition).
Besides, Hans Baur recounts in his memoirs that Hitler was favorably disposed towards Ukrainians, only turning down their request to join the Reich due to the assurances he had already made to Hungary/Admiral Horthy and due to an aversion towards opening up new territorial disputes.
As I mentioned earlier Hitler was an anglophile and it wasn't some minor trait, it was actually one of the most important influences on his foreign policy. Hitler's obsession and main inspiration was british colonization of India. His big plan was to recreate it in the east word for word.
No, his expansion towards the eastern territories was not modeled upon British colonization of India. Although he regarded the British occupation of India as a stabilizing element in that region, he didn't approve of the British expecting their subjects to be grateful for the harsh treatment.
This contributed to Germany losing the war directly, because Hitler consequently sabotaged all plans of creating a Russian Liberation Army as a real force that would have had a massive impact on the war and would almost certainly lead to defeating Soviet Union. Nowadays a lot of russian neo-nazis will try to pretend ROA was a real military force but it never really was because Hitler didn't allow that.
Is this coming from an overtly pro-Slavic standpoint? You remind me of Albert Speer, whose pessimistic leanings permeate his writings (even in the German original). He depicted Hitler as regarding Slavs as superior in the long run. Slavs were just as bestial as the Nazis, if not worse, it's sufficient to read through the crimes of several Slavic collaborators.
Most Soviet defectors only sided with Hitler for reasons of opportunism or self-preservation, this can be seen in how several prominent generals (i.e. Andrey Vlasov, Sergei Bunyachenko) switched sides during the Prague uprising. Also, the lower-ranked Vladimir Gil and Vasyl Meleshko were prime movers in this defection.
Kubizek mentions Hitler had the speech superpower since his teenage years. The first time was apparently after seeing Wagner's Rienzi, the music got him so elevated that he had like a mystic experience and went on a lengthy and inspired speech, and afterwise even he acted surprised and he felt like if something was talking through him rather than if it was him speaking.
The significance of the Rienzi performance to Hitler is not only corroborated by Albert Speer's diaries, but also by Hitler's other architect Hermann Giesler and Otto Wagener, the latter who claimed Hitler had testified that at times something spoke through him. This other passionate side of Hitler has been observed by Leni Riefenstahl, Hans Grimm, and the American diplomat Sumner Welles, and without the need for a cheering crowd (according to Christa Schroeder and former American president Herbert Hoover), and especially by the defector Otto Strasser, who distinguished between Hitler as the ordinary politician and Hitler as a medium/seer.
Apparently he lost this power of inspired speech toward the end of his life. This is where the idealistic vision of Irving etc. starts to differ from the bitter reality. Irving says that after the Stauffenberg's assassination attempt the experience of being close to death and miraculously surviving reinvigorated Hitler and made him look and talk like he was 10 years younger.
Irving wasn't making it up, Hitler himself claimed in speeches that he had been galvanized. This is reported by most members of Hitler's entourage.
You seem to subscribe to the exact same materialistic view as Otto Strasser that age is the delimiting factor of a person's vitality. This is contradicted by the life of Goethe and countless others.