This gist provides a bash command that looks at your ssh configuration file and uses it to give you a list of ssh hosts that you have configured

quick-ssh-connect

if [ -f ~/.ssh/config ]; then
   #Print simple list
   grep ~/.ssh/config -e 'Host ' | awk '{print $2}'
   
   #provide list in Select form to allow quickly connecting to the target
   select TGT in $(grep ~/.ssh/config -e 'Host ' | awk '{print $2}');
   do
      ssh $TGT
   done;
else
   echo "You need to add some configurations to your SSH Config file before this does anything useful"
   echo "   Hint: type "man ssh_config" for more information"
fi;