what if i second the suggestion but without the disclaimer ( ͡° ͜ʖ ͡°)
Now we're talking!
I trust you've already read TSF Monogatari and Dulce Report, which are classics, as well as their ongoing sequels.
For starters, I'd suggest Trans Venus. It has good art and while somewhat silly it's pretty vanilla in content. Another one is Conveni-N, which is pure brainless fun.
There's also Turned into a Breast Milk Fountain by a Beautiful Vampire, which is more of a light novel, and is a pretty good read, even if the erotic elements are rather tame. If light novels are fine with you, TS Revolver and Chijoku An tend to write quite a bunch of these. My Yandere older sister M-to-F'ed me! is probably my favorite.
Moving on to more extreme contents, TS-ko to Orc-san is pretty neat, and features everyone's beloved Good Guy Orc. If you can handle incest, there's some pretty nice series, such as: Para Furi ~Strange those who cohabit~, Hentai Futago, Copipe! and Change-De!.
Now talking about more specific authors, Marneko tends to do quite an amount of them, with more recently Maiden Carnation, though I do hope she'll continue Asa Onna na Ore to Futanarikko Ojou-sama one day (tan gender bender!). Ruen Rouga is another prolific author in the matter, though most of her works aside from Soul Chain are pretty tame in content (and get stuck in translation limbo). Finally, everyone's beloved Q also publishes a fair amount of one-shots unrelated to Dulce Report, but with some reoccurring themes (that is, futanaris, gender bender, and futanaris), namely Flesh Doll Studio, Extracurricular Torture [Lesson] and Girl's First Time.
Wish Ryo's Natsuduka series got fully translated though.