It would seem to me that Uralic lexicon similar to IE that is also
found in Samoyedic would be the most likely not to have been borrowed. I'd
also look at Yukaghir --if you can find anything. Of course, you'll want to
look at other Nostratic languages as well.
Regarding other Uralic lexicon that resembles IE, you'd have to
develop some type of criteria that would satisfy open-minded skeptics
Peter P: I don't have "ideas" so much as curiosity, about some of the
deepest
loans into, or from, Uralic. Some words appear in Altaic, PIE, and
Uralic. The question, which is very difficult to answer is are these
old words inherited, or borrowed. The direction of borrowing
generally is given from PIE, but not all sources agree and new
etymologies appear as knowledge accumulates.
Because I am familiar with Finnish and because Finnish borrows
extensively from IE, I just have a curiousity about words that appear
to be similar to English, Latin, or Greek words that I know. Also
the grammar and morphology of those languages interests me so I just
like to find valid connections. Presumably at a deep enough level
there are inherited connections.