Sometimes writers are left wondering what publishers they should approach. There are so many choices. There are so many big publishing houses out there, but a few only talk to you if you send in an agented submission.
Then there are the few (like Tor and Baen) for whom you don't need an agent, but they are deluged with submissions. Of course, I would still suggest submitting to them. Personally, I have a collection of rejection letters from both.
Then there is the small press. Some of these are vanity publishers in disguise and should be completely avoided.
Which of the rest are "the good ones"?
I don't know about a lot of them, but I know about a couple. Wild Child Publishing is one of them (I have a contract with them now) and another is Mundania Press.
I have worked with Mundania in the past and they are professional, polite and attentive. By the same token, they publish good books by good authors and a writer could do a lot worse than being associated with Mundania.