Bought my wife a Trek superfly 29er currently builtup with Bonty Rythm Pro tubeless and some Bonty 2.2 tires

Now my wife has decided she is just doing mixed road/packed dirt/gravel riding and the wheel/tire setup is bombproof for single track, but way too slow for gravel/packed, particularly when she hits long road sections.

Any recommendations for a different tubeless tire? Someone recommended Maxxis Crossmax.

Should I consider a CX tire?

Thanks!