Answer:
Answer 1
Orthodox Judaism
Modern Orthodox Judaism
Chasidic Orthodox Judaism
Haredi Orthodox Judaism
Conservative Judaism
Traditional Judaism
Reform Judaism
Reconstructionist Judaism
Secular Humanistic Judaism Jewish
Renewal Alternative Judaism
Karaite Judaism
Samaritains
It is important to note that not all of the sects listed above would consider the remainder of the sects listed to be necessarily Jewish in the same way that some Christians consider Mormons to be Christian and others do not.
Answer 2
Sect is a pretty strong word. A number of Jews prefer the term "affiliation" because every affiliation of Judaism is interconnected to every other affiliation.
The main affiliations in the United States and Canada are:
Reform
Reconstructionist/Renewal
Conservative
Orthodox
Modern Orthodox
Lubavitch Orthodox