Here’s some videos for reference and I’ll throw some rough style mockups in there too.

I like the style of this, but not the colour
Like the look of this, but not the drawing style.
Also liked how the city looked in this
I like the rain that comes in at 00:21 I thought I could add elements like that drawn over the footage.
I like how in this video the linework is inverted so it’s a dark grey with white lines. we could mibbe try that too.
I’ll do a mockup to show what I mean
This is a bit mad, but again I like the hand drawn building style. This took a year to make though 😅
This one was good because with just a slight camera move the scene looks quite different.
Bit rough on the sketch, sorry.
I thought maybe it could be drawing with black outlines but inverted to add a different atmosphere?