In the interest of Science (tm), I will answer some queries and try to dispense of what little knowledge I have of the issues surrounding such material.
The first inquiry regards a list of links for my preferred hentais. I am having a bit of trouble parsing the inquiry, so I will answer it in two parts.
First I shall describe some of my preferred genres or attributes in general and secondly I will describe some of my favourite instances of such material.
Throughout, I shall intersperse social commentary. This is all off of the top of my head and may or may not be accurate.
Preferred Genres or Attributes (or Focus)
(1) Traps. This is currently my favourite focus and likely the one most controversial to me personally. The basic definition of the word "trap" is a boy who looks like a girl. The context from which it originates is some guy A looking to have a good time with a presumed-to-be-a-girl person B, when really the gender (although particularly, the physical traits of person B) reflects that of a typical male and guy A is "trapped" when it is revealed to him that person is, in fact, a male.
The term is rooted in transphobia, and particularly, transmisogyny, although I suppose it has applications to crossdressers who identify within the gender binary. Regardless, the context from which it originates is harmful. It's my guilty pleasure, essentially.
This is all that I really care to say at the moment.
Some Favourite Instances
(1) Make A Matchless ♂ Succubus Masochistic. One of my top favourites. The character design of the succubus is very cute and has a mischievous quality to it. Problems with this piece are potential racism by objectifying darker skin colour, rape, and potentially pedophillic subtext. The last problem is a problem I personally find difficult to nail down as given that the media does not reflect any real-life subjects, I don't think there can be a reasonable case to be made that there is something wrong with it or even if such a subtext exists.
(2) Angstory. Potentially generic yaoi. I really like this one because of the style and because of the story. Seeing the bully transform into a deeper, more likeable character while interacting with the main character is somehow heart-warming. That and him seeming to explore his sexuality is also heartening in a promising way.
No, gay-recruitment is not a thing. It's a joke to scare homophobic people.
(3) Boku ga Kanojo. Interesting exploration of a relationship between a hinted-to-be-transfem character and a presumably straight and cis male. A question can be posed: If a transgirl who has used no medication wrt hormone replacement therapy and another sorts of gender dysphoria-related surgeries has sex with a cis guy, are they in a gay relationship or not? (Western queer theory provides the answer "no.")
(4) That Damn Kid Won’t Stop Crossdressing 7: Imperial Grey Zone (Inazuma Eleven). Uhhh. Not sure what to say really, besides two guys exploring sexuality at a relatively young age. This makes me curious as to the state of sexual education in elementary/middle/high schools these days. Do they adequately address all forms of sex and include appropriate consideration for other sexualities?
Likely not, but I heard good developments at least in Ontario.
(5) Oshitai Moushiagemasu, Enma-sama. (Momotarou Densetsu). Not sure why I included this. It was hot. Demons and gender-bending? Sick-nasty.