A loan agreement is the document which represents the formal evidence of a loan. The document also includes important details such as covenants, positive or negative ones, the information on the collateral such as loan type and its value, as well as guarantees, the applicable interest rates, fees, the conditions according to which the loan is to be repaid, and the period of repayment envisaged.
Whatever is agreed regarding applicable penalties for late or inability to comply should not only be discussed but also defined. Payment deadlines also should be set and included in the loan agreement as well. In order to effectively carry out the terms in the agreement, it is but proper to include the contact information of both the lender and debtor should the need arise to call them out.
If you have any queries in future, then you should be able to easily contact the lender. For this purpose, you should ensure that the company name, corresponding address and the phone number are mentioned in the loan agreement than the details about the agent who has been processing the loan for you.
For commercial banks and large finance companies, "loan agreements" are usually not categorized although "loan portfolios" are often broadly characterized into "personal" and "commercial" loans while the "commercial" category is then subdivided into "industrial" and "commercial real estate" loans. "Industrial" loans are those that depend on the cashflow and creditworthiness of the company and the widgets or service that it sells. "Commercial real estate" loans are those that repay loans but that depend on the rental revenues paid by tenants who lease space, usually for extended times. More granular categorizations of loan portfolios exist but these are always variations around the larger themes.