Kthi / 317 (Kaithi), supported by Unicode since version 5.2 with the alias Kaithi (ref. : Ch15.2) : mag-Kthi, mag-Kthi – (disabled)
Sidd / 302 (Siddham, Siddhaṃ, Siddhamātṛkā), supported by Unicode since version 7.0 with the alias Siddham (ref. : Ch15.5) : mag-Sidd, mag-Sidd – (disabled)