For US Fintechs:

Yes, you can connect your Coba account with other US fintechs and banks using Plaid.

Please consider that most fintechs in the US require an SSN and/or be a US resident to use them.

For MX Fintechs:

There’s no alternative to connecting with other financial institutions in Mexico. You can use your US Deposit Account to withdraw USD using the SPEI banking system in Mexico, indicating the CLABE from the recipient account.