[Vuejs]-How to pass a prop from parent directly to all children components?

There is no way you can pass to all those children component without using either props or any kind of state management.

You can still simply manage all those state using the Global Event Buss. Global Event Bus is simple enough for your application if you don’t want to use Vuex. In this case your props1, props2 will be store globally and can access by your child of child components easily without using props.