IEEE may do it, as it's a professional organization. That is, they're a non-profit dedicated to the furtherance of the field. Being open access fits their mission, and the costs can be handled by dues and fees. Springer and Elsevier are for-profit publishers. I don't know how if they can have an open-access business model.

I'm not sure "open access" in this context actually means, err, that the access is actually open.

This is lame, but always remember that OpenAlex exists and is completely free:

https://openalex.org/works?page=1&filter=primary_location.so...

They are both hosted on the same platform, which is owned by John Wiley & Sons.