With WooCommerce Custom Shipping module you can add multiple custom shipping methods to WooCommerce.

After you choose the number of methods you want to add and admin titles, visit WooCommerce > Settings > Shipping to set each method’s options. There two subsections – shipping with shipping zones and legacy custom shipping methods.

WooCommerce Shipping - Admin Settings - Custom Shipping Methods

Accessible through:
  • WooCommerce > Settings > Booster > Shipping & Orders > Custom Shipping
Tested on WooCommerce 7.3.0 and WordPress 6.1.1