Research on underrepresented populations is essential for fostering greater diversity within the software industry. Team diversity is important for reasons that go beyond ethics. Diversity contributes to greater innovation and productivity, helping decrease turnover rates and reduce team conflicts. Within this context, LGBTQIA+ software engineering professionals face unique challenges (e.g., self-isolation, invisibility feeling). This study aimed to examine data from both traditional and grey literature through a Multivocal Literature Review focused on the developer experience of those professionals. Our findings reveal that issues such as invisibility, prejudice, and discrimination adversely affect their experiences, compounded by the predominance of heterosexual males in the field. Conversely, professionals who feel welcomed by their teams and organizations, especially in processes tailored to their needs, report more positive team dynamics and engagement.