As you can see all these staking are from top exchanges, my advice is to stay away from low rated exchanges that offers staking service, very soon they will claim to offer same service as well, if you have something else to add on the list pls do
If you are an old member or someone who has known about cryptocurrency as a whole you will be avoid it. You will only trust to the reputable exchange although they ask you with the high fee. But for those who didn't know or just new to this market they will find a service which ask a lower fee and entice with another advantage when they use the service.