In Jainism, the main pratimaji (Mulnayak) in temples is almost always a Tirthankar who has not yet attained Moksha (i.e., one of the 24 Tirthankaras). A "Siddh Bhagwan" refers to a liberated soul (Siddha) who has already achieved Nirvana. Such Siddha deities are not worshiped as the principal presiding image (Mulnayak) in Jain temples in the same way as a Tirthankar.

Therefore, there is no ordinary Jain temple in India whose main pratimaji is a Siddh Bhagwan. Siddhas may be honored or depicted within temples in other ways (for example, in shrines, prathishtha corners, or as part of Siddhachakra/Chakras in some contexts), but they are not typically the central Mulnayak idol.

Notes:

• The concept of Siddha (liberated soul) is recognized in both Digambar and Shwetambar traditions, but the temple’s central worship is usually directed to a Tirthankar Mulnayak.
• If you have a specific temple or Siddha-related shrine in mind, I can provide details on how Siddhas are represented there and how the temple’s main pratimaji is described in its tradition.