No. While values are similar among all religions, just as body parts are among living beings, this does not mean we are all the same or a subset of another. These philosophies are very deep and unique in their own ways and interconnected with each other, so I will only cover the outright major differences. Sikhi is mostly compared to Vedanta, so I will keep it separate. I will be using Hindu terminologies when mentioning Sikhi for ease of understanding. 1.) Mimamsa - This school is atheistic, considers the Vedas as infallible, and promotes Vedic rituals to reach higher satisfaction. It follows the Brahmanas and Samhitas parts of the Vedas. Different yagnas, homas, and sacrifices (including animals) are made, and praises of gods are sung; however, this is done only to reap the fruits of benefits, with heaven as the final goal. The concept of a creator God or mukti didn’t exist in the original Mimamsa. Sikhi does not believe in Vedic rituals or Vedic superiority, doesn’t worship Vedic gods, and is strongly theistic. 2.) Samkhya - This school is an atheistic-dualistic school that doesn't believe in one supreme God but two separate principles of reality called Prakrti and Purush. Prakrti is nature or matter, which is unconscious, and Purush is witness-consciousness, which is free. When Prakrti comes in contact with Purush, intellect is formed alongside other elements that a jiva/person (a state of Purush) has to escape to reach mukti/kaivalya. Prush and Prakriti work together for their respective goals because, in some cases, Prakrti itself is bound and wants mukti, not Purush, as Prakrti uses Purush to experience/present itself. When satisfied, it motivates, whether intentionally or unintentionally, Purush for mukti or wants mukti herself. Sikhi is not Samkhya because only Purush wants/gets mukti, not Prakriti; it is panentheistic and believes in creation/Prakriti within God, as well as all Jiva/Purush. 3.) Yoga - This school is the same as the Samkhya school but has the concept of a personal god/Ishvara. Ishvara is a distinct, incorruptible form of pure awareness, utterly independent of cause and effect, and lacking any store of latent impressions. Sub-schools of Yoga, such as Bhakti and Raja, have similarities with Sikhi, but Sikhi has its own definition of Raja Yoga, Samadhi, Namaz (Islamic), etc. Sikhi rejects any personal deity and is monistic. 4.) Nyaya - This school uses extreme logic and reasoning. It focuses on gaining true knowledge of the real essence of 16 categories of existence to reach moksha. It also suggests Yoga/meditation, but only after finding true knowledge of categories through Nyaya methodologies. God is not the material cause. It is strongly knowledge-based and follows a pluralistic nature of reality. Sikhi is different as God is also the material cause. It is primarily devotion-based and monistic. 5.) Vaisheshika - This school is similar to Nyaya, but the categories of existence are six (one was added by scholars later, making a total of seven). It promotes a form of atomism. Elements (except space) are made up of tiny particles called atoms. Atoms are uncreated and eternal entities. God (the unseen cause/moral force) is separate and does not create the atoms, only manipulates them according to the law of karma to create reality. It is also knowledge-based and follows pluralism. Sikhi is different because it is devotion-based, monistic, and panentheistic, as no entity other than God can exist. *.) Tantra - This is another sub-philosophy within Hinduism that is usually included under Yoga, but elements can be found in almost every school. However, some Indian Hindu Tantra schools may reject the Vedas. It can be found all over the world in other religions, and they do not fall under Hinduism. It consists of mantra recitation exclusive to a particular school or deity, rituals, meditation with different physical postures, and certain specific techniques for spiritual growth. Most of these elements are opposite to Sikhi, so Sikhi doesn't fall under Tantra either.