You can start by researching online. Look for publishers that specialize in the type of comic you create. Also, attend comic conventions where you might meet publishers or get leads.
You can start by researching publishers that focus on your genre. Look at their submission guidelines and see if your work aligns with their interests.
One way is to research publishers that focus on your genre and submit your manuscript to them. You can also attend literary conferences and network with industry professionals.
One way to find a good publisher for your novel is to network. Join writing groups, either online or in person. These groups often have members who have experience with different publishers. You can also look at bestseller lists in your genre and see which publishers are producing successful books. Don't be afraid to send out sample chapters and a synopsis to multiple publishers to see who shows interest, but always follow their submission procedures carefully.
You could try reaching out to smaller indie publishers first. They might be more open to new authors. Prepare a portfolio of your best comic pages, a detailed synopsis, and a bio about yourself and your creative process. And don't forget to follow the submission guidelines of each publisher precisely.
You could look at bestseller lists in the non-fiction category and see which publishers are behind those successful books. Then reach out to them. Another option is to join writing groups or associations related to non-fiction and get advice from fellow writers on finding publishers.
Contact literary agents who focus on non-fiction. They have connections and can guide you to the right publishers. Another option is to look at the acknowledgments section of non-fiction science books you like to see if the authors mention their publishers.