Exactly. It's kind of funny; the two non-cancelled yuri examples you mentioned are on the opposite ends of the spectrum from one another. One is a telenovela, one is sugar.
The only other manga that were leaping to mind are Inio Asano's Goodnight PunPun and Aki Eda's Bonnouji. PunPun's central romantic relationship is an adorable bullet of misery plowing into the spine, while Bonnouji is a cheerful comedy about deepening relationships and how your best friend can be your romantic partner. It's reminding me of earlier examples.
Asano's is generally blackest comedy about modern life, while Eda's other works are like her Touhou and yuri stuff, very sedate and introspective. I haven't read of much of Asano's other works, but I would recommend anything by either of them.
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Nez replied while I was writing the reply, so:
I forgot about those three. Especially Girl Friends, as I haven't read it in a while.
Girl Friends has an interesting structure, now that I think about it. Beyond how it shifts between the two main characters' perspectives, it has clear arcs of friendship, conflict/confusion, and reconciliation/dating. It's much more well rounded than most romance mangas.