You may be interested in Chakra UI (https://chakra-ui.com), which has low-level details (including default theming) basically identical to Tailwind CSS v2 but is built around css-in-js via Emotion.
[1] https://chakra-ui.com/docs/comparison#the-runtime-trade-off-...
Another less popular one that I have had my eye on for some time is Mantine. It seems very polished and composable.