When on a LAN switch DHCP snooping is configured the networks that can be accessed by which clients?

The network is accesible just for the whitelisted clients configured in the switch connected to the DHCP server

Explanation:

DHCP snooping main task is to prevent an unauthorized DHCP server from entering the our network.

Basically, in the switch we define the ports on which the traffic of the reliable DHCP server can travel. That is, we define as "trust" the ports where we have DHCP servers, DHCP relays and trunks between the switches.