As another person with ADHD I've found the Tabs Outliner extension works best for me - it allows you to view tabs in a tree, label/group them, search for tabs, open/close tabs/groups/windows in one go, and most importantly the tree of tabs persists across sessions, so it can be used for bookmarking, suspending, organising and locating tabs depending on your usage - you can export it as HTML, and for a fee you can have it backed up on Google Cloud.

My work tree has somewhere over 500 items and my home one has several times that many, but it's easy to find things and keep them for later :)