In India, Zomato[0] (now listed) and Swiggy[1] both had a Series K. SpaceX has only gotten to a Series J, but they've done some secondary sales since. Apparently, Palantir[2] has had a Series K as well, back in 2015.

[0]: https://appedus.com/indias-zomato-raised-500-million-in-seri...

[1]: https://techcrunch.com/2022/01/24/indian-food-delivery-giant...

[2]: https://www.finsmes.com/2015/12/palantir-technologies-raises...

If you Google "Series K investment" basically all the hits are about this. Same applies for J and I - you have to get back to H before you start seeing anyone else.