apt.readynas.com - Broken repo?

Here is a 2024 Solution: It is tested working by me.
When I ran apt update and upgrade I was finally able to get things working without key errors etc.
My question for the group here: what can/should I remove at this point from the mirror/sources lists.

I updated my Sources to:
 

cat /etc/apt/sources.list

deb https://apt.readynas.com/packages/readynasos 6.10.8 updates apps main
deb https://apt.readynas.com/packages/readynasos 6.10.7 updates apps main
# deb http://mirrors.kernel.org/debian jessie main
# deb http://security.debian.org/ jessie/updates main
deb [trusted=yes] http://archive.debian.org/debian/ jessie main
deb [trusted=yes] http://archive.debian.org/debian-security jessie/updates main

deb [trusted=yes] http://archive.kernel.org/debian-archive/debian jessie main contrib non-free
deb [trusted=yes] http://archive.kernel.org/debian-archive/debian jessie-backports main contrib non-free

I am using Mirror as well (300 gigs)

root@NETGEAR-NAS:/home/machine# cat /etc/apt/mirror.list
############# config ##################
#
# set base_path    /var/spool/apt-mirror
set base_path    /home/machine/apt-mirror
#
# set mirror_path  $base_path/mirror
# set skel_path    $base_path/skel
# set var_path     $base_path/var
# set cleanscript $var_path/clean.sh
# set defaultarch  <running host architecture>
# set postmirror_script $var_path/postmirror.sh
# set run_postmirror 0
set nthreads     20
set _tilde 0
#
############# end config ##############

deb http://ftp.us.debian.org/debian unstable main contrib non-free
deb-src http://ftp.us.debian.org/debian unstable main contrib non-free
##start custom
deb https://apt.readynas.com/packages/readynasos 6.10.8 updates apps main
deb https://apt.readynas.com/packages/readynasos 6.10.7 updates apps main
#deb http://mirrors.kernel.org/debian jessie main
#deb http://security.debian.org/jessie/updates main
deb http://archive.debian.org/debian/ jessie main
deb http://archive.debian.org/debian-security jessie/updates main

deb http://archive.kernel.org/debian-archive/debian jessie main contrib non-free
deb http://archive.kernel.org/debian-archive/debian jessie-backports main contrib non-free

##end custom
# mirror additional architectures
clean http://ftp.us.debian.org/debian