The most commonly cited one is Konnichiwa, but knowing that is time specific, can it be used generically in all hours of the day as a "hello" instead of a specific "good afternoon"? Ohayou and Konbanwa doesn't seem to hold the same nuance to me as a standard greeting and more of greeting your coworkers or friends in the morning/evening.
Any generic greetings like these informal greetings such as 'domo' or 'osu' or 'ya/yo'?