Whoohoo! Nice jump!!
I went through a "growth spurt" with my score a little over a year ago and can attest that yes, the scores can vary for a while. They'll eventually even out if you stay consistent. My guess is it has to do with the fact that while the bureaus use similar (some may argue, the exact same just differently labeled) factors, the total weight of each factor is different across.
Check out this article on the Turbo blog, it goes into more detail on this very subject!
https://turbo.intuit.com/blog/credit-score/why-is-my-credit-score-never-the-same-480/
