I think "space" and silence is my key to understanding WLS, he uses both to great effect as I hear it.
It's such a huge discography now that it seems faintly ridiculous to pluck single albums out to recommend. I might suggest a dive into the Tzadik box set, if it's now streamable
https://www.discogs.com/release/583787-Wadada-Leo-Smith-Kabell-Years-1971-1979
Early small group and solo pieces that I fell in love with when it was released. Immerse and live with it for a bit, if life allows. There's so much being said musically in what I hear as a very original way. Would love to have come across it real time but even I'm too young for that.
I don't think the TUM label is streamable which is shame as they've released his most recent work. I have a soft spot for the string quartet box amongst others.
Interestingly, I admire 'Ten Freedom Summers' more than likely it. I did see an astonishing performance of part of it at Oto.
Go and see him live if you can (he's at Wigmore Hall in October but with you know who)