I see you have youg children so this functions more as a family room rather than a living room so my suggestion is for you to look into having your pictures redone in black & white and sized to all fit the same size frames. I also show how you can complement your decor not only with frames on the wall but with a coffee table, lamps, and accent pillows.

I always admire @lisedv’s work. She gave a direct answer to your question and her mock-up above looks really nice. Here is an alternate idea - if you only have one large wall to decorate in the living room, not using large art there could be a missed opportunity to bring color, warmth, and personality into the space. Smaller family photos could go on a smaller wall in hallway, loft, master bedroom or . . .

Ginatay124 also had good suggestions so now you have 2 options...

Thank you both for the suggestions!