I have a bunch of Roman coins awaiting identification and I need some help, as most of them seem to be from the Constantine era and I suck big time at telling apart these emperor brothers. Any clue would be appreciated!
#1:


diameter: 17mm
thickness: 1mm
weight: 2.00g
#2:


diameter: 17mm
thickness: 1mm
wright: 2.01g
#3:


diameter: 18mm
thickness: 1.5mm
weight: 2.55g
#4:


diameter: 16mm
thickness: 1mm
weight: 1.66g
#5:


diameter: 16mm
thickness: 1mm
weight: 2.06g
#6:


diameter: 15mm
thickness: 0.5mm
weight: 0.85g
#7:


diameter: 14.5mm
thickness: 0.5mm
weight: 2.66g