We have a lot of fields to display in grid or list views and try to minimize the width of fields, but the field type icon gets in the way from a readability perspective. Just place it on the right side or hide it altogether. The user cares more about what the title of the field is not what type it is and the we want to be able to know it is the correct field at a glance. Or you could a checkmark somewhere in preferences whether the icon should be displayed at all (I'd rather see it on hover or something and would turn it off on all views). Thanks!