Strength hasn’t really changed all that much. The soviets kind of had unmatched sample sizes and decades of work into empirically determining how to gain strength, they kind of got us 80% of the way there. I think the only real unique advancement has been showing RPE works. Although you could argue that Soviet coaches were using its older cousin for decades.
Much of the stuff is just reworking old Soviet concepts and refining them. Things like MEV and MRV are variations on customizing number of lifts.
But I guess more cutting edge science would be reactive training systems and juggernaut training. CWS did a lot of work with the RP crew (and IIRC was who got Greg Nuckols started on the internet.)
Wait… so what is the heaviest stone you can lift?