Travelers curating a trip with Lufthansa can board the flight smoothly without waiting in long queues at the airport gate. This is because this airline offers dedicated Lufthansa boarding groups for flyers based on several factors such as travel class, status and more. Additionally, in the points below, it is mentioned how many boarding groups there are.
Boarding groups for Continental Flights: There are a total of 1 to 5 boarding zones, along with pre-boarding groups.
Boarding Groups for Intercontinental Flights: There are groups 1 to 6, including pre-boarding groups. 
To get more details about boarding groups, one can visit the official website of Lufthansa or go through the above blog mentioned by Group Travel Airlines.
Read more: https://grouptravelairlines.weebly.com/blog/does-lufthansa-have-boarding-groups