If it walks like a duck, quacks like a duck, it's a duck. Now you need to determine if an OW is a complete dealbreaker for you or not. If it isn't and you are still interested in saving the marriage, then prepare yourself for a huge rollercoaster ride of emotions. Marriages can be saved from issues of infidelity, but it takes work, a lot of forgiving, and effort to determine what the issues were, and resolve them, which drove the H or W to look for intimacy outside the marriage.
Whether it's a dealbreaker or not, I think you've got enough evidence from your snooping to make a reasonable verdict on whether there is an OW. If I were you, I'd stop snooping now. It takes too much energy and emotion out of you. I snooped until I found the evidence I needed to confirm my suspicious. It was emotionally draining each time I found things out. When I stopped and just started focusing on my life and my kids live's it was like a huge weight lifted off of me. I started refusing to let my stxbw's infidelity be a drain on my emotional and physical health.
