I am working In Magento 2 Module, I've to do some customization on Magento Onepage checkout, for that I plan to use the checkout_onepage_controller_success_action, but In my project, We're installed some third-party modules, which are already used this event.
So, I believe if I again use the same event It won't work, an observer doesn't have an order to execute.
I want the equivalent event of
checkout_onepage_controller_success_action. Is there have anything in Magento 2 Kindly let me know it.