as far as distinctive and beautiful uses of reverb, i'd nominate 2010s autechre. (initially held off on posting something like this cause i know some of us are sick of autechre fanboism, but eh what the hell.) there are memorable instances earlier on in their music, but in the past decade there was sort of an unmooring from the expectations of, for lack of a better way of putting it, "familiar" reverb physics. according to which it's always firmly attached to a source sound, and follows a predictable tail pattern of decay.
the passage from about 1:20 to 3:30 is a good example of reverb taking on a life of its own: increasingly flaring up and changing color independently of any discernible source. a surreal, impossible experience.
another effect that you can already sort of achieve with basic plugins, but that their 2010s style hones in on further, is getting harsh sounds to cast a sort of "choral shadow" through resonance in the wet signal. for example the first few minutes of the above, becoming more obvious if you jump to a timestamp where the reverb is alone. there's a haunted, ghost in the machine quality to this.
not trying to oversell their originality though; laurie spiegel, for example, was getting the latter effect 20 years earlier.