This study analyses the frequencies of inclusion of digital literary-educational proposals on the diversification of sex/gender/sexuality expectations by in-service Spanish teachers of secondary education (n=436), and the predictors that determine this inclusion. Based on the application of the instrument Digital Literary Education and the Construction of Gender Identities (DLECGI), the study is developed in non-experimental designs of a cross-sectional nature, and at the relational, explanatory and predictive levels of research, insofar as it seeks to reveal the socio-demographic, formative and didactic causes of the phenomenon or event of interest, and its degree of occurrence. The results obtained indicate the existence of a profile of teachers who promote the recommendation of this type of digital reading based on their belonging to non-binary gender groups with previous training in co-education and equality, and with explicit didactic stances on controversial issues. Likewise, the relationship between socio-demographic variables and the didactic positioning of teachers on the recommendation of digital readings on affective-sexual diversity shows that initial and/or ongoing specific training in co-education and equality is a key predictor of this relationship. These findings attest to the fact that the visibility and recognition of identity plurality in literary education necessarily involves the proposal of counter-hegemonic models regarding gender and affective-sexual identity. In this regard, teacher training must continue to progress towards the adoption of inclusive didactic approaches within the framework of educational principles for democratic citizenship, regardless of the gender or personal and social identity that defines these teachers.