Different blockchains have a different set of rules for developers willing to develop tokens or projects on their blockchain. If you want to make a token on a popular blockchain, you need to follow their standards. These standards are a set of rules. Below are some popular token standards.
These are some of the most popular standards for tokens. These standards are API callbacks and predefine functions to follow when creating a token. If you comply with these standards your token or coin will be identified from that standard.
There are a lot of token standards in Ethereum alone, but above are some of the most popular and widely adopted standards.