Here are some modern guitar styles for this #threetunetuesday by
Whirr is a mix between alternative, dream pop and shoegaze. Most of their songs are wall of sound mixtures with subdued vocals.
Here is Berried Alive with an odd mixture of metal, trap, djent and maybe video game music. Both the bassist and guitarists can pull of amazing technical feats. It almost starts sounding electronic. Not sure I can listen to it as just music but if I watch them playing its almost impossible to turn away.
Here is Polyphia with some highly technical playing. I would almost classify this as a strange modern jazz mixed with prog rock and a hint of metal. Imagine trying to remember all the parts of this song to play live lol.
That's all for now, thanks for looking :-)