People have a fear of shiny tiles being slippery, when actually the surface of a polished porcelain tile is quite grippy to the point that an electron microscope shows that the polishing process actually opens the tiles pore structure and these tiles are more prone to accumulating microscopic grime more so than the exact same tile unpolished.
It’s counter intuitive, but it’s true.
The other variable is the composition of the foot ware material, the rubber compounds.
My local shopping centre in Australia recoated the concrete outside the complex last year.
My thongs (footware) are a foam type and the old floor coating was terribly slippery, as were painted lines on the road, treacherous in fact.
The new surface was brilliant for me… everyone else wearing rubber “double pluggers” were slipping over like nine pins !!
To the point where I witnessed an amputee slip and damage the only knee he had left, poor <deleted>.
In short there’s a lot of variables in slip resistance, as mentioned, bring some home and throw water on them and see how they feel to you.