When I was young and lived in the country with a big pond and marshland, most of the frogs went “THUMMM” at night (like this m.youtube.com/watch?v=6qHBRXLHXnc) and the others were more like a high pitch creaky door or one of those hollow wooden frogs with the back ridges that you play with a stick, like this m.youtube.com/watch?v=p-XPYXuCOjg

I’ve never lived near any sort of frogs that I’d describe as making a riib sound

I think this is the sound you are talking about? It’s kinda harder to pick out, but there’s a distinct riib sound there that’s absent from the other video. m.youtube.com/watch?v=8fJWGKbXw4Y