Panda Global Rankings
The Panda Global Rankings (PGR) is a biannual list compiled by Panda Global Gaming's PG Stats team ranking the world's top 50 Super Smash Bros. for Wii U smashers. The first list was released on May 27th, 2016.
The second list was fully revealed on January 19th, 2017.
PGR v1 (January 2015 - May 2016)
The first list was compiled by 48 panelists and the PG Stats team -- Dom, suar, and Zan and took into account tournament results from Apex 2015 to 2GGT: Fresh Saga. The players' rankings are purely based on tournament placings and set counts, with a heavy emphasis on 7 major events: Apex 2015, CEO 2015, EVO 2015, Paragon Los Angeles 2015, The Big House 5, GENESIS 3 and Pound 2016.
It also includes a separate and subjective metric voted on by the panelists referred to as "X-Factor", which follows a more similar approach to Melee It On Me's SSBMRank. A player's X-Factor is the difference between their PGR ranking and their spot on the list that the surveyors rated them at. A player with a very positive X-Factor would theoretically be a notable figure in the community feared by top players but would not have the results to back them up. On the other hand, a player with a negative X-Factor would be somewhat of a "hidden boss" showing impressive results and wins with a lack of acknowledgement from the community. The full list was revealed after LVL UP EXPO 2016 and Get On My Level 2016, but was created before those tournaments started, making some of the set records and notable wins exclusive to the time beforehand.
Bolded tournaments signify majors, and non-bolded tournaments are defined as nationals by the PG Stats team.
The subjective components used to determine the X-Factors were derived from a survey that was sent to over 50 community members from around the world.
The United States, Canada, Mexico, Japan, Europe, and Australia were represented among the 48 individuals who were surveyed that answered back.
Tristate (8) - ANTi, Dabuz, Dom, False, Gunblade, Nairo, NAKAT, Tweek
PGR v2 (May 2016 - December 2016)
The second list took into account results from LVL UP EXPO 2016 to 2GGT: ZeRo Saga included. Spike, juddy, and Giant were added to the PG Stats team to more accurately cover the Japanese, European, and Mexican scenes. The tournaments included were classified into tiers according to the number of ranked players attending and the number of entrants in general, with tier 1 including major events and tier 4 locals. Just like the first rankings, a heavy emphasis was put on 6 tier 1 tournaments: CEO 2016, EVO 2016, Super Smash Con 2016, The Big House 6, UGC Smash Open, and 2GGT: ZeRo Saga. The X-Factor metric made its return as well. 
Bolded tournaments signify tier 1 events, and non-bolded tournaments are defined as tier 2 events by the PG Stats team.
The number of panelists was reduced from 48 to 30. The survey used was similar to the first one.
Tristate (7) - Tweek, Dabuz, Austy, ANTi, Gunblade, Max Ketchum, Dom
PGR v3 (January 2017 - July 2017)
The third list will evaluate tournament results at events from Midwest Mayhem 6 to EVO 2017, and will feature a larger panelist group compared to the previous rankings.  As a response to feedback concerning previous tournament classifying methods, a new system will be implemented, called the Tournament Tier System (TTS). The TTS ranks tournaments based on four factors in their singles tournaments: entrant numbers, PGR v2 attendees, top 20 PGR v2 attendees and prize pool, and categorizes them into S, A, B and C tiers, with S signifying tournaments of the largest caliber. In order to account for and provide more balance towards tournament scenes such as Japan, which generally do not feature prize money in their tournaments, the TTS algorithm rewards top player density over prize money. Weekly and bi-weekly events will be ignored by TTS as not to affect local environments with the pressure of global rankings, and not to skew the PGR towards specific regions.
This list is not final, and will include more tournaments throughout the PGR v3 season as they meet the TTS criteria.
May 2016 - December 2016
X-Factor adjusted rankings (subjective)
January 2015 - May 2016
X-Factor adjusted rankings (subjective)