Yo pmer.
Far as I know the 144,000 come from each of twelve tribes, noting that Dan didn't make the list.
There are plenty of theories as to why that is, revolving around the tribes past and future behavior, including "gross idolatry" and some saying that scripture indicates that the "anti-Christ" will come from the tribe of Dan. I tend to think that the devil is going to keep that role for himself but whatever, the tribe of Dan is a fascinating study. It's recorded in correspondence from the time that the some of the Greeks knew they were kin. The Danites became merchant sea traders leaving their mark, their name, on rivers and lands and peoples far and wide. That probably has nothing to do with what you were thinking about but as far as I know Dan is the excluded group.
Anybody else, anybody remember the make up of the 144,000?