Different Nigerian news websites work differently depending upon where they obtain their news items from as well as what technology they use to transmit any news item that they manage to obtain.
Main stream media companies have established ways of obtaining news however smaller channels may obtain their news or at least part of their news items from media houses that are central to the country and hence no two companies would appear to have or would appear to carry the exact same news items that you may have a keen interest in.
It does not really matter what website you refer to for news relating to Nigeria. As someone with a keen interest in this country, you would be happy to obtain any news that may develop from the country provided that it does not compromise on accuracy of information which is something that you will want to give priority to.
A good number of people nowadays simply refer to online news platforms or specific websites such as Naija news for Nigeria news and you may also want to do something similar as it is easier to read news relating to Nigeria online from a few different websites using your mobile device or your iPad or a computer system or whatever you may have access to then waiting for your local newspaper to print such a news item for you.