I did not forget about this topic: I'm just super slow...
I don't respect (in the sense 'admire') very easily. It's just not a feeling I experience often, probably because of my inherent inability to relate to people. I rarely think I would like to be like someone, or marvel that someone is as great as they are.
It does not prevent me for being very appreciative of other's people works, though usually, it's limited to very specific aspects/skills.
So, to be the closest possible on topic, I chose the artist that I'm the most impressed with regarding overall skills, and that would be Toby Driver (maudlin of the Well, Kayo Dot - and several other projects).
I admire him as a composer and as a singer. In both roles he is very eclectic, albeit still manage to be skillful in any of the various genres he's choosing to tackle. Also, I'm far from being a specialist of all genres, but as I age, I know more and more, and discover new interesting aspects in his music.
For example, for a long time, I was not quite aware of how clever some jazz parts were, because I'm not very educated in jazz. Even after hundreds of listens, I still discover things, and that's something extremely important to me.
Also, on a more sensitive/subjective side, I love how some of the longer pieces have a sort of musical storytelling so intense, I feel like I watched a 2 hour long movie when it's finished.
This piece for example. The final always let me stunned even if I have listened to it very, very many times. But it actually does not much by itself. I would not say every single note before is important for the effect, but I would say, every slice of 10s of the piece is important to achieve the effect.