I ended up just putting together my own bang provider (and stole the snaps feature from Kagi).
Like till now If I wanted to search something on reddit from duckduckgo, I would search "<search query> reddit"
But it was also an hit or miss sometimes so you are telling me that snaps can just @r <search query> and guarantee its from that is amazing!
Your list of resources feel good too, https://time.fyi and other tools are good too!
I would love it if your resources also included open source resources similar perhaps as I prefer open source tools mostly but even these resources are good too so thanks!