3 or more syllables:
Haletic(yes), Rorqual(no)
stress on first syllable:
Haletic(yes), Rorqual(yes)
/l/ is the most common consonant phoneme, followed by /m, s, n, r, k, t, d/, then a huge drop-off before other consonants:
Haletic(l, t), Rorqual(l, r)
Short vowels are favored over long vowels and diphthongs:
Haletic(all three vowels are short), Rorqual(one long vowel, one diphthong)