Nazi Germany never really had a consistent policy on any racial group except the Jews. There's no specifics except what some high nazis said in passing. A lot of what we identify as nazi ideology comes from Hitler's ramblings to invited dinner guests, some of whom wrote down what he said. The status on many nationalities and groups changed during the 12 years the nazis were in power, depending a lot on their prowess in fighting and their possible willingness to fight the enemeis of Germany.
One could say there was an order akin to this;
Germans.
Germanic people (Dutch, Flemish, British, Scandinavians, including Volks-Deutsche).
Latin people (French, Italian, Spaniards, Portuguese, it seems like the Greeks and Romanians were also included here).
Turkic people (including many Central Asians and muslim Europeans such as the Albanians and Bosniaks).
Slavic people.
Mongol people.
African people.
Jews.
However, this "pecking order" was never fixed nor very clear. The Germans were happy to raise and use the 162. Turkoman Division from ex-Soviet Central Asian soldiers captured on the Eastern Front and the Croats, who were a Slavic people were considered a worthy ally against the Chetnicks and Tito's partisans, and those very same Chetnicks, who were mostly Serb nationalists and/or royalists were suddenly worthy allies when they switched sides to fight with the Germans against Tito.
The Slovaks, a slavic people were considered decent allies until the desertions of their two divisions on the Eastern Front turned too high.
Likewise, the Poles were a sub-human Slavic people, except when the Germans needed more and more manpower, and more and more Poles were classified as Volks-Deutsche and conscripted into the Heer. By 1944, the Polish II. Corps in Italy and 1. Armoured Division in France were checking German prisoners of war by speaking Polish to them and replacing their casualties by offering a position to anyone who could answer.
The Bosniaks and the Albanians were considered sub-human until they started volunteering for the SS in the Albanian 21. Waffen-Gebirgs-Division der SS Skanderbeg and the Bosniak 13. Waffen-Gebirgs-Division der SS Handschar (both of which were some of the worst SS formations).
Likewise, the Germans had high hopes for the Lithuanians as an ally, but when they not only refused to participate in the war against Poland 1939 but also refused almost to a man to volunteer for German formations after Operation Barbarossa 1941, they were re-classified as sub-human.
Muslims were considered sub-human, except when the Germans found anti-semitic allies among some muslim leaders, then they were suddenly worthy allies.
And even when the Germans did try to recruit and consider troops worthy allies, it was not always those men were well recieved in the army. The 25. Panzer-division was made up mostly of Volks-Deutsche and the hight command in Norway where the division was stationed had to publically forbid the term Deutsch-Pole which was used as a derogatory term for the Volks-Deutsche in the division. No less than 30 men deserted to the Soviets when the division was moved to the Eastern Front.
Now, this is getting rambling, so I will try to answer your original question.
Hitler referred to Soviets reserves that worried the German high command during autumn 1942 (right before Stalingrad was surrounded) as "Mongoloid half-apes who will run at the first sight of a Stuka" yet later in the war he referred to Central Asians as "Hardy, good soldiers who lacked the softening decadence of city-dwelling Europeans".