I have a Rockwell 6C, 6S, and Model T. I like them all. They are fantastic shavers.
I have the RazoRock Game Changer and both the .84 and .68 plates. I prefer the .68, but I have really, really sensitive skin. The RazoRock MJ-90A is also good, but the 'A' is for aggressive.
I have a couple of razors from Yaqi, the Romulus (SE taking Feather AC blades) and the Bohemia (DE). They are both SS and very good shavers, but the prices have gone up on them and you have to go through AliExpress.
You could take a look at Henson Shaving. I have their AL13 razor. It is very light weight, but mild. It takes some TLC so that you don't press down too hard, but gives great results.
Timeless is a really great option. I recommend staying away from the bronze if you go that route. They are quite heavy in bronze which adds to aggression. (I have a bronze Timeless that I got through Somnos' Estate Sale. RIP.)
Also, take a look at Blackland. They make excellent products, but I would stay away from the Blackbird if you want a mild razor. I have a Blackbird, and while it is not my most aggressive DE razor (that honor goes to the Matte Black PVD Limited Edition which I got from Fendrihan), it is quite aggressive.
The Parker Variant is a great razor.
I love my Merkur 34c and my Mergress (available from Bullgoose Shaving).
Finally, I still love my Fatip Piccolo. It is medium aggressive, but with TLC gives a really great shave.