Just recently came across these two new discs, and they're oddly similar while also having odd designs. Neither of these discs are called discs, for one, and for another, they both have this contoured hump in the side profile of their rims.
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MamiCup came out with a menstrual disc called the Leaf Cup. It's oval with the long side at 70mm. It's a nice shade of green. The front part of the rim is thicker and has a raised bump on it. I have no idea what the purpose of this button-esqe bump is for. They call it a finger dome, but it seems a bit small for that? The removal instructions on their website is a bit lacking in specifics.
Link: https://www.mamicup.com/products/the-leanf-menstrual-cup
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The Halo Pod I came across in a Period Nirvana video. It's an oval disc with a Diva-style loop. The official page doesn't give any measurements, but from the PN video, I would say the long side is at least 70mm if not a bit more. The rim is apparently very soft and has a plastic rim embedded in it to help with insertion.
Link: https://vwell.com/products/halo-menstrual-pod
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I haven't been able to find it again, but I did come across a preview of a pink, round disc with a Diva-style loop. From the pictures, it's probably in the 68mm range. I remember looking at it and deciding it wasn't for me, and apparently dumped it from my memory.
I'm a bit starved for new disc designs :P . Especially since it seems like Moonthlies has kind of disappeared off the internet. More discs more choices!