UX-library-list

Some of them have a clear documentation, and moreover, explain their choices like Clarity or Michelin.

Needs fees (usually per dev and per year)

DevExpress: it has some more functionnal components like calendar: angular2+/React/Vue/VanillaJS, Not all js frameworks has the same components for instance. Oh, i forgot: it's free for open-source project (or non commercial ?).
SyncFusion: like DevExpress a quite complete list of components: Angular/React/ES6/ES5
Smart Elements : lots of components available as webcomponentrs or for framework Angular, Vue, React ... [https://www.htmlelements.com]
Ignite UI : Angular, React, and WebComponent [https://www.infragistics.com/products/ignite-ui-react]

KendoUI: Angular/React/Vue
Sencha: React
CoreUI: Angular/React/Vue some of their coponents are free, but quickly you will need a licecne (for data-table perexample)

Clarity Take care, since Broadcom bought VMWare at the end of 2023, the project is in standby at the moment (2024/10/16)
PrimeUI
Material Design 3 - by Google
Material Design for Bootstrap 5 & 4 also available for Angular, React and VueJS
Toast UI Some of their apps have wrappers for React, Angular or VueJS, but not all apps, neither all components
Dell Design System
Carbon Design System - by IBM
Porsche Design System for webComponent/Angular/React/Vue (in older version, they used Clarity Design System + their own plugins, that doesn't seems to be the case now)