https://www.mangago.me/read-manga/yagi_to_ookami_no_hatsujou_jijou/
not really an isekai but they travel to another world
https://www.mangago.me/read-manga/gyangu_no_kai_kata/
also not really isekai but it deals with time travel?? close concepts ??
https://www.mangago.me/read-manga/the_affairs_of_the_other_world_depend_on_the_corporate_slave/
this is isekai but they dont start off as the whole baby thing
https://www.mangago.me/read-manga/trash_of_the_count_s_family/
in this one he is isekaied but there is no particular love interest , hes just trying to servive, which I find entertaining
off topic kinda but my favorite Girl Isekai read is
https://www.mangago.me/read-manga/suddenly_became_a_princess_one_day/
i think this is the best one but I agree that I would be more content if there were more male isekai :v Hope this gave you something to read and was close to what you were looking for
You know those isekai stories where the girl gets transported into a book and she has to act as royalty starting from a child. I want one of those except the main character is male. I haven’t really been able to find any.