#3 Liverpool — 25

Liverpool are seemingly unscathed by Chelsea, Manchester City's squad depth and Manchester United's sudden uprising. The Merseysiders are the only team who are yet to lose a Premier League game.
Sailing under the fine form of Mohamed Salah and Co., they are also the team to score the most number of goals (17) within the league. The Egyptian, who was labeled a 'one season wonder' by rival fans, has been proving his doubters wrong ever since.
By carrying on tradition, Sala has scored nine goals off nine games across all competitions so far. Jurgen Klopp's men, along with putting on quite some show in the Premier League, have also dominated their UCL group.
Despite being a part of the "Group of Death" (Group B), the Reds have fired eight goals from just three matches. Five of them came against one of Liverpool's favorite opponents — FC Porto.
#2 Ajax — 37

The Eredivisie giants secure the second spot with 37 goals across all competitions. The Dutch league leaders have smashed a whopping 30 goals from just eight league games and seven goals from two Champions League fixtures.
While it was expected of Ajax to dominate the domestic competition, nobody would have expected them to start off big in Europe's most elite league. The Lancers hammered five goals against Sporting CP alone. Spectators hope Ajax, minnows at UCL, will emulate their 2019 dream run this term too, where they reached the semi-finals.
With a goal ratio of 3.75 in the Eredivisie and 3.5 in the Champions League, Ajax are riding comfortably on their confidence.
#1 Bayern Munich — 47

It wasn't a regular start to the season for Bayern Munich in the Bundesliga. The Bavarians are facing tough competition from the likes of Borussia Dortmund and Bayer Leverkusen. However, they maintain the top spot solely because of their goal difference.
The German champions have seldom taken a day off for when it comes to goal scoring. With Robert Lewandowski at the helm, Bayern Munich have accumulated 47 goals from across all competitions in the ongoing 2021-22 season. Breakdown of their goals is - Bundesliga: 24, Champions League: 8, German Super Cup: 3, DFB Pokal: 12
As per the tradition that we have witnessed so far, Bayern Munich could leave its opponents behind by a far greater margin as the season progresses. Their squad depth and high-level experience provides the Bavarians with the kind of edge needed in the long run.
Do note that, the above mentioned tweet is from 30th September 2021. Bayern Munich played Frankfurt on 3rd October and added another goal to their list.