Going from Yiddish to Mongolian (ะะพะฝะณะพะป) has a composite linguistic distance of 95% (heuristic estimate). Below is the dimension-by-dimension breakdown.
Shared vocabulary, cognates, and loanwords.
Morphology, syntax, word order, cases.
Shared sounds and phoneme inventory.
Hebrew โ Cyrillic
Indo-European โ Mongolic
The 5 languages with the lowest linguistic distance from Yiddish:
A quick 3-question check between Yiddish and Mongolian. No signup.