Hi,
Well, macros within these Tiles styles are using the Extend X/Y Size to Area feature and in case you want to animate it "row by row" you can use a X Spline & Y Size set-up instead - if needed together with the Clipping Area (but having the mentioned Extend X/Y Size to Area feature disabled). Please feel free to check the attached sample scene showing a possible style set-up for these purposes. I hope you'll find it useful.
Best regards,