This looks great! I've been using https://asoftmurmur.com/ because I like the "meander" feature which gives a randomness to the noise. Strangely I find "flat" noises (like a fan running at a constant speed) to be too distracting. Looks like mynoise has a similar feature called "slider animation" and lots more selection.
Possibly the best, and very comprehensive. Great user interface. I am in touch with the owners, they're looking at creating a 'pub' option. Authenticity is important so until pubs are open, it sits in the planning stage, as all the appropriate recordings can't be made.
My favorite of online noise is https://mynoise.net/
Infinitely configurable, can save personal settings in a cookie. Good stuff