Trans performers are well-represented on the larger cam platforms, with some sites having dedicated sections and others relying on category filters. The platforms listed here have consistently active trans rooms — not just a category label with sparse results.
Chaturbate and Stripchat both have strong trans sections with regular traffic. Some specialist platforms exist purely for trans content and are worth considering if this is your primary focus. Jerkmate includes trans matching through its preference quiz. These sites are ranked for catalog depth and how consistently active the rooms actually are.