>In the case of the Holodomor, there's no such articulated plans to eradicate a people
You're incorrect. The Holodomor was an implementation of the clearly set policy to subdue peasantry and "clean up" rich peasants (the rich peasant were basically any peasant who wasn't completely destitute) as peasants weren't carriers of proper communist ideology (only dirt poor village laborers who didn't have their own land/horse/etc. were considered to be ideologically close to proletariat).
Where it gets a murky for some people not well knowing history of Russian Empire and USSR is whether Holodomor was a genocide of Ukrainians or genocide of peasants.
As it happens the Ukrainian people and their language were spread far beyond modern Ukraine and well into all those agricultural fertile lands where Holodomor happened: http://iamruss.ru/little-russians-on-the-1897-census/
The peasants in those fertile areas did better because of Nature as well as because of history - those weren't classic Russian territories where peasants had been enslaved for centuries, and thus the peasants there were more close to US/European farmers than to classic Russian poor peasant. Thus they became target.
So while more evidence point to it being genocide of peasants, one can't dismiss that the majority impacted were Ukrainians, and that is especially pronounced in the areas, further from the modern Ukraine, where peasants were mostly Ukrainians while cities, due to cities naturally speaking Imperial language (i.e. Russian in this case) and having recent large influx of Russian speaking population due to industrialization, were mostly Russian.
Can you provide a concrete piece of evidence that the USSR government set out to accomplish this? For example, I can easily pull up correspondence that shows the intent of top brass in the regimes responsible for other 20th century genocides. For example, you can easily find evidence that Lenin and others sought to discipline kulaks, but nowhere are the Holodomor's famines mentioned there.
>easily find evidence that Lenin and others sought to discipline kulaks, but nowhere are the Holodomor's famines mentioned there.
that is what i was talking about - disciplining kulaks, successful peasants, which basically meant destroying significant part of the peasant population there. And if you look at the map i linked - those regions had mostly Ukrainian speaking peasant population.
You probably have different than bolshevik's notion what "disciplining" is. Bolsheviks were outright genociding whole social stratas (and kulaks were one of such a strata) because bolsheviks saw no place for those people in the supposedly beautiful future the bolsheviks were supposedly building. And just for an example - you probably not aware how bolsheviks used chemical weapons against peasant revolt in Tambov region.