Mini Cookie is quite a comprehensive stack for this, though it seems to have significantly increased in price since I bought it. It does seem to offer features that others don’t have (unless I’m missing something) like the option for the user to change their mind on accepted Cookies later if they have previously accepted them.
MiniCookie | Stacks4Stacks
There is also the free, though donations appreciated, Cookie Manager which can integrate with Gateway for conditional stack display
Other stacks I know of but don’t have are:
Joe Workman’s Cookie Jar
Juergen Barth’s Biscuit Box
https://barth-partners.com/pub/it/stacks/biscuit-box/#