@xin-li Great choices, and some names I don't know and get to look up! Off the top of my head, I absolutely love Lisbeth Zwerger, Jerry Pinkney, Chris Hong (an indie artist, not published) and classics like Arthur Rackham, Edmund Dulac, Jessie Wilcox Smith, and Beatrix Potter. I also like Freya Blackwood. There's loads more but can't think of/list them right now.
You should honestly just study the ones you really admire and resonate with you. There are lots of different techniques with the medium, so some might not be what you are looking for personally. But it's also good to try different things out because you never know when it could be useful! If you want to look at very traditional/classic stuff I would check out Golden Age stuff like Rachkam, Dulac, Potter, Greenaway, and Caldecott etc. The giftbook/fairytale type stuff. Those are absolute masters of I've ever seen them. There are loads of other great artists who did that stuff too. Zwerger is contemporary but she was very influenced by them and big fave of mine.
I love talking about this stuff
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