Other VPN Peers : 250 this license is for ikev1 and ikev2 site-2-site VPN. You can also use it with remove access ikev1 VPN.
AnyConnect Premium Peers:- This license contains feature for anyconnect mobile, advance end point assessment, anyconnect premium shared, ssl VPN clients, remote access ipsec vpn (needed for ikev2 only) , clientless ssl VPN etc
AnyConnect essential :- client ssl vpn, ipsec remote access ikev2, anyconnect mobile
You have anyconnect premium license 2 by default. If you need to connect only 10 ssl VPN clients then, you only need to purchase ssl vpn essential.