It's a shame Schwalbe dropped the Supreme and that what looks like the replacement, the Efficiency, has limited sizes starting at 40mm. I'm stocked up with enough tyres to last a few years, so I haven't needed to look for alternatives. Keep in mind when looking at recommendations they the manufacturers change versions and compounds without changing the name, Schwalbe are particularly bad in this regard. So with that in mind, here's some I've used in the past that might be worth a look at:
Schwalbe Marathon Racer - These were my tyre of choice for a number of years, used for touring, commuting and general riding, hard wearing, decent grip, reasonable rolling resistance. The Supreme's were better in every regard, though not by a huge margin.
Continental GP Four Seasons - These are now available in 32mm, though when I used them 28's were the widest. I used them for Audax and a couple of light tours. These are the nicest tyres I've ever used, for my use, on my priorities, they come top of the list on everything except longevity, where they score quite poorly. If I had the budget, or a bike that didn't see a lot of miles, it would be shod with these.
Panaracer Pasela - It's at least 15 years since I've used these, they were a tyre ahead of it's time and probably frozen in that time, other manufacturers caught up and maybe overtook them, though some people have kept the faith. They are a good tyre, probably a bit nicer to ride than the Supreme, but they don't have the same puncture resistance, or longevity and if you use them off road the sidewalls seem vulnerable, though I never had a problem.