Almost certainly guy #2.
ETA:
There are a lot of opinions here on your daughter's situation.
Since there is no way to change this - and no way to be 100% sure of the father without having the baby and getting a paternity test - I'd like to offer some non-judgmental thoughts for the future.
Has your daughter been taught to defer to men? Has she somehow gotten the message that men define her? Or that her sexuality defines her?
It's BS, but many young men are still taught that being predatory is "manly". This can collide with strict conservative teachings - like deference to men- in an unfortunate way. And I ought to know. I was not, but could have been, your daughter at an earlier time in my life.
She should be told a few things (over and over) with love -
One, the media makes it seem like all young people are sexually active. And many young people SAY that they are so they seem "normal." In reality, man many young people are NOT sexually active. Not everything people say - especially teens who fear being seen as odd - is true.
Two, she is under no obligation to make any man happy. She is not obligated to defer to any man. She may withdraw consent at ANY time - even if she previously said yes, even if she previously had sex with a man. If she wants to kiss a man and STOP there, she has every right to do so. *He* is not in charge of her body - she is. He is not in charge of her value - she is. Her sexuality is not her value - her mind, her hopes, her kindness are. Sexuality is a small part of who she is and can be.
Three, it is NOT true that "all men want is sex." Any man who says otherwise is, at best, immature, and an unsuitable partner for her...because she's better than that.
I wish you and her all the luck in the world.