Kagi is still partnered with Yandex[0], but they removed a list of sources they used. When asked if the list could be restored, Vladimir Prelovac replied "Is there any particular reason you are asking for this? More context will help us better understand the need."[1]
[0]: https://kagifeedback.org/d/5445-reconsider-yandex-integratio...
[1]: https://kagifeedback.org/d/252-show-source-of-results/49