Exact blacklist entry not working

The last two domains in your domain list are not assigned to any groups, thus are not effective. Assign them to the default group.

*** [ DIAGNOSING ]: Domainlist (0/1 = exact white-/blacklist, 2/3 = regex white-/blacklist)
   id     type  enabled  group_ids     domain                                                                                                date_added           date_modified        comment                                           
   -----  ----  -------  ------------  ----------------------------------------------------------------------------------------------------  -------------------  -------------------  --------------------------------------------------
...                                 
   7       1          1  0             wpad.hsd1.co.comcast.net                                                                              2022-07-11 14:07:01  2022-07-11 14:07:01                                                    
   8       1          1                pi4.hsd1.co.comcast.net.hsd1.co.comcast.net                                                           2022-07-12 11:13:02  2022-07-13 20:56:47                                                    
   9       1          1                pi4.hsd1.co.comcast.net                                                                               2022-07-12 11:13:13  2022-07-14 16:46:44 

Did you perhaps turn them on/off from the Blacklist menu or edit the comments there?

You might be affected by: Domains edited from Black/Whitelist page lose Group assignment · Issue #2260 · pi-hole/web · GitHub

To workaround until the fix is released: use Group management/Domains instead of Black/Whitelist pages.

Unrelated, but noted in your debug log many instances of this log entry. Update your Pi-hole to pick up a fix that was released for this:

 -----tail of FTL.log------
   [2022-07-19 14:30:18.888 606/T607] Accepting new telnet connection at socket 11
...

Your router is appending your local LAN domain name to the queries.

     domain-name: "hsd1.co.comcast.net"

Look in your query log or the dnsmasq log at /var/log/pihole/pihole.log for additional details (requesting client, etc.)