I still feel they are not quite on the level of the singer I posted. The lyrical content and the way they sync with music is also less mature.
No they don't sound the same, and of course the Righteous Brothers are some of the finest vocalists of all time so they may not be on quite the same level, but they were simply to demonstrate that 'white boys' can very much still sing. I don't know if you grew up in the early 50s/60s, which would explain that you have a certain nostalgia, but for me looking back historically (and I love all kinds of music, including the Righteous Brothers and 'crooners') you can clearly see a shift in music developing from the mid 60s onward. 'Crooning' quite obviously goes out of fashion. Those guys (like the Righteous Brothers) didn't even write their own songs, they were supreme vocalists but they generally either did covers or had songs written for them.
Of course this man, who was a compete genius but certainly didn't have excellent vocals (though not as bad as some make out) had a lot to do with the shift towards singer-songwriters who wrote and sang their own stuff:
But there are loads of examples. Point I'm making is music changes, and comparing modern music to stuff like the Righteous Brothers is just bizarre when music didn't even sound like that even a decade later. Paul Simon, Tim Hardin, James Taylor, Van Morrison, Graham Nash, Nick Drake, Tim Buckley, Fred Neil etc. ad infinitum don't sound like the Righteous Brothers either, or have that crooning voice, but they are still 'white boys' with great voices. Note, I'm not saying that's the only kind of music that was popular, just making a general point. Hell, to use another 'blue-eyed soul' example, Joe Cocker sounds nothing like old school crooners, is he a bad singer?
And I really don't like Ed Sheeran either, don't even know who Sam Mendez is but there are plenty of good singers. Unless you are looking for some cheap Michael Buble type stuff, it's not likely to be much like the Righteous Brothers...Doesn't mean the singers aren't good.
How about Paolo Nutini?
(time stamped to the best bit)
Or, for a guy that is just straight-up 60s soul you have someone like Paul Janeway from St Paul and the Broken Bones: