The GE Cafe line is low profile. You can get island trim on some of the higher end ranges which provides a low profile.

Are you looking for gas or electric or dual-fuel?

electrolux has a nice looking induction.
Bosch looks okay.
Diva induction range looks okay.
I like the looks of Ikea ranges for the price. They look modern at a very comfortable prices.

Some Euro companies make nicer looking ranges.
Ilve, Brittania, Bertazzoni, Frateli Onofri, Smeg
come to mind. Go look at the Euro decoration magazines.

Euro ranges have much lower profile handles. (not bulky round knobs that American brands use) The angles are kept sharp and crisp, not rounded.

I really like the way Fisher Pykle appliances look in modern kitchens. Their handles are crisp and angular.

Viking designer series has nice lines.

Aloha, go to AJ Madison and peruse in their range section. They have a great selection and you can see what the list price is.

Slide ins need the same 30" of clearance that a freestanding one does. Only the part that hangs over the counter is wider. The range itself is still 29 7/8" or whatever fraction under 30". The opening for each type is the same, unless you're talking that wierdly nonstandard designed Electrolux.

Here's a shot of our Bluestar 36" with island trim.
HTH.