Some thoughts from Anne Lawrence on your question, OP
www.annelawrence.com/autogynephilia_&_MtF_typology.html
"Blanchard's realization of the conceptual link between transsexual subtypes based on sexual orientation and the phenomenon that he would later call autogynephilia derived from decades of earlier observations concerning transvestism or erotic cross-dressing, MtF transsexualism, and the relationship between them. By the early 1980s, many clinicians had recognized that there were at least two distinctly different types of MtF transsexualism, plausibly reflecting entirely different etiologies (for a review, see Lawrence, 2010a). No one MtF transsexual typology, however, was generally accepted. Although transvestism was generally regarded as a disorder of sexuality — a paraphilia — and MtF transsexualism as a disorder of gender identity, clinicians had observed many similarities and connections between the two conditions. Specifically:
-transvestism sometimes evolved into MtF transsexualism (Lukianowicz, 1959);
-the boundary separating transvestism and MtF transsexualism was not distinct (Benjamin, 1966);
-both transvestites and MtF transsexuals experienced types of cross-gender identities (Stoller, 1968);
-some MtF transsexuals were effeminate and androphilic, whereas others were primarily sexually attracted to women (gynephilic) and had --a history of transvestic fetishism (Money & Gaskin, 1970/1971);
the essential fantasy for transvestites, as well as for MtF transsexuals, was becoming a woman, not just dressing as one (Ovesey & Person, 1976);
-MtF transsexualism was nearly always associated with either (a) androphilia and childhood femininity or (b) gynephilia and erotic arousal in association with cross-dressing or cross-gender fantasy (Freund, Steiner, & Chan, 1982).
"Operating from this background, Blanchard began to investigate the relationship between sexual orientation and what he would later call autogynephilia. In an early study, Blanchard (1985) divided 163 MtF transsexual participants into four groups based sexual orientation: a androphilic group, a gynephilic group, a bisexual group (attracted to both sexes), and an analloerotic group (not attracted to other people). He found that 73% of the combined gynephilic, bisexual, and analloerotic participants reported a history of sexual arousal with cross-dressing, compared with only 15% of the androphilic participants. The observed relationship between sexual orientation and sexual arousal with cross-dressing was statistically strong, with a calculated effect size of .58 (see Table). Based on this evidence, Blanchard reaffirmed Freund et al.'s (1982) conclusion that there were probably only two basic subtypes of MtF transsexuals: a nonandrophilic subtype, composed of persons who, like transvestites, had a history of sexual arousal with cross-dressing; and an androphilic subtype, composed of persons without any history of erotic cross-dressing."
[...]
"... in nonandrophilic men with gender dysphoria, a tendency to describe oneself in a socially desirable way was correlated with a tendency to deny sexual arousal with cross-dressing, suggesting an explanation for the underreporting of autogynephilic arousal. More recently, Zucker et al. (2012) found that, among 96 adolescent boys referred to a gender clinic because of transvestism, 47% denied sexual arousal on every item of a 10-item scale measuring transvestic fetishism, although this was precisely the problem for which they had been referred. In this study, too, a tendency to socially desirable responding was associated with denial of sexual arousal with cross-dressing. Although denial of autogynephilic arousal may often be unintentional, sometimes it is deliberate: Walworth (1997) reported that 13% of 52 MtF transsexuals she surveyed admitted having lied to or misled their therapists about sexual arousal while wearing women's clothing. Lawrence (2013) presented several narratives by MtF transsexuals who had concealed or lied about autogynephilic arousal, both to psychotherapists and to other transgender persons.
"Similarly, MtF transsexuals often inaccurately report being sexually oriented towards men (androphilic), either unintentionally or deliberately. For example, in a study by Nieder et al. (2011), of 44 males diagnosed with late-onset gender dysphoria — many of whom were plausibly autogynephilic — 52% reported that they were sexually attracted to men; but the clinicians who evaluated them believed that only 9% were actually androphilic. In some cases, autogynephilic MtF transsexuals who claim to be attracted to men may simply be experiencing attraction to the idea of having their femininity validated by men, a different phenomenon. Some nonandrophilic MtF transsexuals, however, candidly admit to having lied to their therapists about attraction to men"