Regarding the choice of name, presumably you already know about Sketch, the popular image editing software.
I wonder if the image editing guys will in the future incorporate AI functionality too? Which might make "Googling" for your product difficult for your potential customers?
I just googled "sketch application" or "sketch image editing software" I found sketchpad... alternatively, I found sketch.com, which seems to be design software?
I mean, it's a vague enough name that I don't think it's a good name anyways, but I'm not sure it should be obvious that this is a taken name in the way that "Photoshop" would be.