Lookup formula except include "other" as a varible

Hello,

Please see attached spreadsheet.

I would like a formula in column G, that if matches/looks up J, K and L in the table next to it starting at N2.

I have two undefined variables that I have called "other" and "level".

"Other" is anything that is not listed in column N such as "XX" in my example.
"Level" could be any number between 0-4. There are two columns P (for anything level 3) and Q (for anything other than 3).

Let me know if this needs more explaination...

Any help is appreciated!

Thanks,

Try this in G3:

=IFERROR(LOOKUP(2,1/($N$3:$N$13=J3)/($O$3:$O$13=K3),IF(L3=3,$P$3:$P$13,$Q$3:$Q$13)),
IFERROR(LOOKUP(2,1/($N$3:$N$13=J3)/($O$3:$O$13="Other"),IF(L3=3,$P$3:$P$13,$Q$3:$Q$13)),"Unknown"))

Or try:

=LOOKUP(2,1/($N$3:$N$14=IF(COUNTIF($N$3:$N$14,J3),J3,"Other"))/($O$3:$O$14=IF(COUNTIF($O$3:$O$14,K3),K3,"Other")),
IF(L3=3,$P$3:$P$14,$Q$3:$Q$14))

Perfect. Thanks!