How to expand a Bash alias given as an argument?

I probably approach this problem wrong. I update my Linux machines with bash aliases like:

alias upg-pi='\ssh -c aes128-gcm@openssh.com -C -i $ssh_identity -o ConnectTimeout=$ssh_timeout root@$ssh_ip_rpi4 -t /root/upgrade'

That alias above, I wrote explicitly, it actually consists of ssh-pi alias:

alias upg-pi='ssh-pi -t /root/upgrade'

I tried expand_aliases and alike. *** Goal - Be able to run several gnome-terminal windows at the same time like:

function upg_all()
{
    gnome-terminal --window -- upg
    gnome-terminal --window -- upg-pi
    # ...
}

I need to sleep now, see you in the morning. Hopefully with some solution. It's Bash-specific on Mint 22. I have full control of this OS. Thanks.