A section you might want to add in your list are
Crypto Calendars.
These calendars would list upcoming announcements / releases / events / ...
Here are 2 of these sites that i know of:
Sidenote: I personally prefer using coinmarketcal.com as I find it better organized.
Another section that might be interesting to add is
Airdrops, I only have 1 website for this tho, but I think there are plenty more around.
I glad to see this comment, thanks. I added first two sites, the third was in list.