One common theme is Liam's journey as a new father figure. It could be about how he takes care of a baby, dealing with the challenges and joys that come with it. Another theme might be the relationship between Liam and the other One Direction members in the context of this new addition. For example, how they support him or interact with the baby.
Some 'baby Liam' fanfictions might also explore themes of sacrifice and responsibility. Liam having to sacrifice his own time and freedom to take care of the baby, and how he rises to the occasion with a great sense of responsibility. And sometimes, there are themes of friendship, where his friends play important roles in helping him raise the baby.
There can also be themes related to the baby's future. Fanfiction might explore what kind of person the baby will grow up to be, or how Callie and Liam plan for the baby's education and upbringing. It could also involve the baby inheriting certain traits or abilities from its parents, which adds an interesting element to the story.
One common theme is friendship. The fanfictions often show the strong bond between the young fan and the members of One Direction as friends.
One common theme is protection. Stiles often takes on the role of protecting Baby Liam, just like a mother figure would. It shows their bond in a very endearing way.
One common theme is family drama. Since Liam and Steffy come from complex families in 'Bold and Beautiful', the baby can be a catalyst for more family issues. Another theme is love and commitment. The baby might make them reevaluate their feelings for each other.
One common theme is innocence. Since it's about baby Liam, his pure and innocent nature is often highlighted. Another theme is protection. Other characters in the fanfics usually feel very protective of the baby Liam.
One common theme could be the idea of the band members showing kindness and protection towards the baby. For example, they might take the baby under their wing and ensure its safety while on tour. Another theme could be the baby bringing a sense of newfound joy and family - like feelings to the group. It could also involve the baby being a symbol of hope or a new start for the band in the fanfiction world.
A common theme is the family - like relationship. The One Direction members are often depicted as big brothers or father - figures to Baby Lux. Another theme could be growth and learning, like Baby Lux learning something new from the boys or vice versa.
You can start by looking on fanfiction websites like Wattpad or Archive of Our Own. There are often a lot of One Direction fanfictions there, and specifically for Liam, you might be able to find some really interesting 'baby' themed ones by using the search function and filtering for Liam - related stories.
One common theme is forgiveness. Often in these fanfictions, they have to forgive each other for past mistakes. Redemption is also a theme. Maybe one of them has made a big mistake and is trying to redeem themselves in the eyes of the other. And of course, there's the theme of loyalty. Are they loyal to each other or will outside factors make them waver?
Common themes revolve around his insecurities. As a young werewolf, he has a lot of insecurities which are often explored in fanfiction. His place in the pack is another theme. Is he an outcast? Or is he a key member? How he proves himself within the pack is often written about. And the theme of facing danger together with the pack, like fighting against other supernatural threats, is also quite common.