Yes, it is extremely likely that some Buddhists are homosexual, in proportion to the rest of the population.
Not all of them
gay people practice all different kinds of religion. Gay people can be Christians, Jews, Muslims, Pagans, Atheists, Agnostics, Unitarians, Buddhists, etc. There is no god of gay people.
Famous Buddhists (during the Buddha's lifetime) were the disciples of the Buddha, who had attained any of the 4 stages to enlightenment.
If you are talking about non-Abrahamic religions in Asia, then the answer is no, although it is a topic of debate within Buddhism, and Liberal Buddhists support the idea, though Buddhists as a whole do not accept gay marriage.
Some religions have extensive lists of dos and don'ts that cover almost every conceivable human interaction. Buddhism isn't one of them. Buddhism espouses any activity which reduces suffering and leads to goals such as compassion and care. Fine details such as "gay adoption" are not identified as an area of comment. Some Buddhists may have their own opinion on the topic as some may also have an opinion of putting ketchup on icecream. Their opinion does not reflect the general thinking of all Buddhists. Even if there was a desire to reach a Buddhist Position, there is no central authority in Buddhism to form or publish the position.
Buddhists do not worship their ancestors or any gods. They might revere their ancestors for being good people or good examples..
There are many millions of Buddhists throughout the world, and it is not clear that their smiles are any larger or smaller than anyone else's.
Buddhists do not worship any god, deity or person; not even the Buddha. We revere the Buddha for bringing us his wisdom and teachings. Buddhists Temples are places were monks and nuns live and study the Buddha's teachings. They also hold lessons and meditation practice for lay Buddhists.
Buddhists do not worship the Ganges, or any other thing or deity. Hindus believe that the Ganges is holy, but since I am not a Hindu I can not tell you why.
There is no concern with eating starfruit. Buddhists are cautioned from eating onions, leeks and garlic and any fruit or vegetable that would cause intoxication.
Buddhism does not worship anything, though there is a tendency amongst modern buddhists (especially western buddhists) to idolaze Buddha Siddhartha. The Buddhists do venerate wisdom and what they called "Right Action" via the 8 fold path, but they do not have any gods.
As the Buddha did not give any teachings on this (it was not a problem in his own time), no Buddhist can speak for others regarding this.