Yes it usually is as the victims of circumcision are usually infants or prepubescent children.
Nothing is known of her sexual orientation.
Soko's sexual orientation is heterosexual/straight.
The Joker's sexual orientation is not written into his character.
The character of Flapjack is not written with sexual orientation
There is no definitive answer as sexual orientation and handedness are independent traits. Studies have shown that handedness is not significantly correlated with sexual orientation.
Frankie Muniz has not stated his sexual orientation.
The sexual orientation of David Rodriguez is unknown.
Matt Evers' sexual orientation is not known.
The fictional character of Yoshi is not depicted with sexual orientation.
The SNL character "Gilly" was not written with sexual orientation.
Reginald VelJohnson has not publicly spoken about his sexual orientation.
I think you mistake "sexual orientation" with specific types of orientation. Sexual orientation is a part of every humans make up. A person can not have a sexual orientation. Your sexual orientation is what makes you gay, straight or bisexual. Homosexuality IS illegal in some countries. You can outlaw a behavior but you can't outlaw an urge or feeling.