As far as I know, Orion is the only iOS compatible browser that lets you load extensions from the Chrome store and possibly Firefox as well although I'm not sure about that.
[0] https://www.ghacks.net/2021/01/21/firefox-for-android-is-sti...
[1] https://blog.mozilla.org/addons/2022/12/15/new-extensions-av...
[2] https://blog.mozilla.org/addons/2023/08/10/prepare-your-fire...