I hadn't seen the original data. Should probably be cut -d: -f3- then.
sort -k1n,1 -k2 cut -d: -f3- | sort | uniq -c | sort -k2 -n
would be sorting the output of uniq(1) by the password, treating them all as numeric. Depending on one's locale that gives results like 1 00auditt
100 babygirl
1 00beetle
or 1 100671105192
1 100997162005jm
2 102030405060
1 102990091404