I love this pair of Danner sneakers for at work…don’t remember the model number, nor if they come in black…but very subdued appearance and, of course, with the right insoles of your choice, they’ve served me very well.
Danner’s a company more associated with leather boots for, logging, and firefighting, or extreme bushwacking…but they surprised me with their sneakers. Mine have a composite safety-toe, but these have surprised me for their longevity, as well as their classic, non-gaudy appearance.
I have a new pair of Merrills in a trail-hiking “style” (I wouldn’t trust Merrill for an actual hiking shoe since a long time) that are tolerable. Also with replacement insoles.
But, if you’re not married to the sneaker/tennis shoe idea, my favorite shoes are slip-on loafers from LL Bean (some kind of suede model) and from Merrill (I want to say “Jungle Moccasin”?)…those I am sure come in black and are both extremely comfortable.
And, as you may have guessed, I use separate insoles for any of my shoes. YMMV, but insoles and good socks can make or break one’s workday, I find.
EDIT I just remembered that Timberland Pro makes a good low-cut sneaker in black leather, which are sharp looking and with the requisite removable insole.
FTR, my preferred insoles are from Spenco and lately I tried a set of Protalus T100 insoles that are obnoxiously expensive, but good…it was a promo offer from my job. The Spencos are my jam, though…everything from dress shoes (well…I consider Chelsea boots dress shoes!) to work shoes to dominating the promenade…YMMV.