List the taxonomic levels from most specific to least specific?

Kingdom, Phylum, Class, Order, Family, Genus, Species.... which is seven rather than eight.

Some people place another level, usually called "Domain", above Kingdom.

There's also a level called "Tribe" that is sometimes placed between Family and Genus.

Finally, the prefixes "Sub-", "Super-", or "Infra-" are sometimes added to one of the existing rank names to indicate a distinction between two or more groups that there isn't room to make in the "official" system.

Finally finally, botanists tend to use "Division" rather than "Phylum." It's placed at the same level, they just use a different Word for it.