I don't really have a start page, but I do use bookmark folders quite a bit for a similar purpose. For example, I have all my analytics links (Google Search Con

I don't really have a start page, but I do use bookmark folders quite a bit for a similar purpose. For example, I have all my analytics links (Google Search Console, my own Matomo, Google Trends etc.) in one such folder, and when I need my data, I middle-click it (yeah, I'm a mouse guy), which opens all the pages in different tabs. Super simple, ultra-low maintenance, gets me 80% there.