After doctoring on this a bit, here's my list of the top 3.5% of Omaha hands for multi-way pots:
AAds
AAKQ, AAKJ, AAQJ
AA77-AAKK
KKAQ, KKAJ, KKQJ, KKQT, KKJT
KK77-KKQQ
QQKA, QQAJ, QQKJ, QQKT, QQJT
QQ88-QQJJ
JJAK, JJAQ, JJKQ, JJKT, JJQT, JJT9
JJ88-JJTT
TTQJ, TTJ9, TT98
TT88-TT99
99JT, 99T8, 9987
9988
wraps 4567-JQKA
big 1-gappers 9JQK-TJQA
1-gappers ds 4678ds-89TQds
low-gappers ss 4678ss-8TJQss
suited wraps (suited A and no 3-flush) 456Ass-9TJAss
These make up 3.50% of all starting hands.