This online clothes store
has quite a few "archetype" male steampunk characters with a brief bio attached... not always the best photos but may give ideas.
Pintrest seems to be a better source for me when it comes to male Steampunk pics than Tumblr. For example this
pin page (or whatever they're called) had quite a lot of pictures and I'm sure there's more out there.
I think the issue on the male/female point is that while there's quite a few steampunk/neo-Victorian female models out there, there aren't many male models. What that means is that you're often restricted to either one-off professional shoots (or even one-off photos) to pick from if you go with a model or "civilians" wearing homemade costumes to conventions which, while often amazing, suffer from generally being poorer pictures and again, often one-offs.
One thing that might help is to minimise the steampunk aspect and expand the Victorian side of things. The temptation when finding a picture for a steampunk character is to look for a photo filled with gears and brass... but realistically would a character have that? An engineer, sure, maybe... but just because steam is the dominant power source doesn't mean things associated with it will be on every
item of clothing or accessory; we don't have things to do with electricity plastered all over us.
Look for say films set in Victorian times and see if there's a male character from there who works; a large part of steampunk is neo-Victorian after all. If you're desperate for some more blatantly steampunk elements, I'd be willing to have a shot at adding some simple cogs, gears or the like in with photoshop if that would help.