To put that in other words:
Your part's beta varies with points chosen.
Any part you would replace it with, its beta also varies with the points chosen.
The two most likely vary in different ways.
Because, again, there are more degrees of freedom here. Beta alone is an incomplete description. (It's actually the first element of a mathematical series approximating the value. The more parameters used, the closer it gets. Sadly, almost no one gives those parameters.)
In still other words, you might pick, say, B0/25, and look for only parts with the same e.g. 3059 +/- 1%, and select a dozen parts that match. On checking their data, you will likely find that they all have different curves, that only coincide with yours at exactly 0 and 25C. And the spread between curves, away from those two points, will be comparable to the spread seen between different B values (i.e., more like 10%).
So what you need to do is, select a range of B values (say 2900-3500?), read through each and every one, and find the one that happens to coincide most precisely with your data.
Yeah, tedious as hell. Welcome to shopping for imperfect components.

Tim