The figure there is from Guest et al. (2013). DOI here:
https://doi.org/10.1111/j.1530-9290.2012.00507.x
For what it’s worth, I considering using those GWPbio factors for a white paper LCA a few years ago and was told by a mutual friend of Geoffrey (the study’s lead author) and I that he strongly recommended against applying them in analyses beyond the narrow scope of the published model. But the trend you’re indicating (fast growing products with a long dwell time are better) seems generally well-supported.