There are two types of people in this world, my friend. Those who notice the tiniest change in MS layout, and those who never realized that the SB was accessible on mobile.
Top 200 albums requires at least 200 votes, with only studio albums featured. Top 20 albums of the year, Top albums by styles, Bottom albums, Live albums and DVDs require 20 votes.
You can create advanced top-lists in the Album index, customizing genres, media types, minimum number of votes, years range and so on.