> How do I get those spacetrack graphs?

NORAD's Space Track service makes the raw two-line elements available, but over the recent decade they have tightened usage and distribution restrictions. By the letter of the terms of service, one who downloads the data may not disclose the raw data or anything derived from it.

https://www.space-track.org/documentation#/user_agree

As a result, amateur satellite tracking groups have to 'disregard' Space Track data and determine orbital elements through their own observations.