Flux doesn't require trigger words, I don't tend to caption my models with anything specific. Just man, or young man should work. I usually prompt my samples with "a handsome young man..."

@northernlad4 you can't use simultaneously and get individual characters with loras, it will just blend them. You have to run them separately on the same image either regional prompting or inpainting or denoise, image to image with masking. I usually will just run with one character lora and get an image with "twins" and then mask one of them and run it again as img to img at a 0.5-0.8 denoise using only the second character separately. works well for me. That's how I produced all the images with Aaron and Robert you can see in v1.0 examples. in Comfyui.