Hi, Bubble’s Director of Operations here - I’ll answer your questions and provide some context below.
In reference to the specific cookies you mentioned:
cookieconsent_dismissed: this is used by the “Cookie consent (EU)” plugin to track that the user acknowledged the cookie banner.
[appname]_live_u2main and [appname]_live_u2main.sig: these cookies are the primary session identifier. This is necessary to support logging in and out of Bubble apps, and saving data to the current user.
Finally, I recommend taking a look at this forum announcement from @josh on this topic – it may be relevant to your own compliance efforts.
Please let me know if you have any other questions – very happy to help where possible!