Hi @tafrej, this is the sample InAppBrowser for you.
For Capacitor, You re able to try with Browser (this is the one like InAppBrowser of Cordova, maybe capacitor just convert it cause both they have the same result. But Capacitor may not too many options like InAppBrowser from Cordova)
For Cordova you are just using the sample from the document.
This is the reference link, I think you should take a look: