You can try Archive of Our Own (AO3). It has a large collection of fanfics, and you're likely to find quite a few baby Tim Drake ones there. Just use the search bar and type in 'baby Tim Drake fanfic' and it should show relevant results.
One good baby Tim Drake fanfic could be 'Tim's Tiny Adventures'. It might show his early days in a really cute way, like his first encounters with the Bat - family as a young child. Another could be 'Baby Tim and the Robin Legacy' which could explore how he was influenced by the Robin mantle even at a young age.
In baby Tim Drake fanfiction, family is a big theme. Whether it's his original family or the Bat - family, his relationships are explored. The theme of discovery is also there. It's about how he discovers his talents and his place in the world of Gotham. And of course, the theme of heroism starts early. You can see the seeds of his future heroics being sown in these stories.
I'm not sure specifically about 'lemon' fanfics as they often involve inappropriate or adult - themed content which is not suitable. However, there are many great fanfics about Tim Drake and Cassie Sandsmark that focus on their relationship in a more appropriate way. You can try searching on fanfic platforms like Archive of Our Own and filter for the Teen and up rating.
One great Tim Drake OC fanfic is 'The New Ally'. It has an interesting original character that teams up with Tim Drake in some really exciting detective work in Gotham. The character development is well - done.
In some cases, characters from Tim Drake's personal life, such as his family members (if they exist in the fanfiction universe) could be present. They might have different reactions to Tim having a baby, some being supportive and others being skeptical or worried.
One popular Tim Drake and Stephanie Brown fanfic is 'City Lights'. It beautifully portrays their relationship, with well - written dialogues that really capture their personalities. Another one could be 'Shared Secrets', which delves deep into their backstories and how they support each other through various challenges. There's also 'Unexpected Allies' that focuses on their teamwork and the development of their feelings during a difficult mission.
I think 'A Young Tim Drake' is a good one. In this fanfiction, you can see how Tim's intelligence was already showing even when he was just a baby. It also gives some insights into his family life before he got involved with Batman. 'Baby Tim's Adventure' is also worth reading. It has a really cute take on how baby Tim might have explored his surroundings while being curious about the world around him.
One interesting storyline could be Tim Drake trying to balance his superhero duties with taking care of a baby. Maybe he has to bring the baby along on some not - too - dangerous missions and figure out how to keep the baby safe while still being a hero.
Well, Archive of Our Own (AO3) is a great place to start. There are a lot of dedicated writers who post their works there. It's also easy to navigate and find specific tags related to Tim Drake and Stephanie Brown. Additionally, Tumblr might also have some fanfic recs or even some short fanfics shared by fans. You can search for relevant tags or blogs dedicated to these characters.
As of the current and widely known comic runs, Tim Drake is not gay. But the comic world is vast and diverse, and such character developments are not entirely out of the realm of possibility in future story arcs.