You could try a garbage matte and a luma key. it might work for the top 2. once he comes in it won’t work because of his black sweater. at that point you will have to rotoscope (which you may have to do to the entire shot if the luma key does not work to your liking.
Andrew VanWickler
vanwyklr@3dvw.com
https://www.3dvw.com