Thank you for submitting your designs. Of the four designs, our preference is #1...it is straight and bold, but we may be too plain. #3 and #2 are interesting but the arc across #3 especially makes it look like ICI has been crossed out. We like your treatment of inc which is very secondary to the ICI.
We still prefer your first entry best...but like that you are trying to come up with something that looks like buildings...#19, though looks like a house rather than a city block...also, we don't think we need the arrow as it makes it look a bit like a graph...