Dolibarr uses, by default, the following transaction types in the Module_Banks_and_Cash_(developer):
|VIR||Transfer, Used for virtual transfers to/from a bank account|
The defaults are listed here: https://github.com/Dolibarr/dolibarr/blob/develop/htdocs/install/mysql/data/llx_c_paiement.sql
You can add your own type of paiement from the menu Home - Setup - Dictionaries.
Note that the type "VIR", "PRE" , "LIQ" and "CHQ" are reserved since they may have effect the behaviour of the application.