What flows better? Or any other suggestions?! 😅

Currently 6 months pregnant with my second boy! We’re struggling with names.. once again 😂

The only names my husband and I currently like are Samuel and Charlie. Nothing else really stands out! I also would like his name to flow with our other two children’s names - Violet and Isaac.

Does Samuel or Charlie flow better with their names? Or does anyone have any other name suggestions that might suit!?