There are two categories you would probably fall into if you were eligible to bring your spouse to live in Kentucky permanently as United States resident. The first category is for US citizens, and the second is for green card holders.
The procedures for applying for a visa are similar regardless of your permanent residency classification. However, there are some significant differences in the processing and post-application procedures. Some of these may affect how long it would take to get your spouse into the country.
As you might expect, your application would likely be faster if you were a US citizen. Other than this general rule, is often not fruitful to pay much attention to estimates. Each case is different, and every step has the potential for delays.
The first major privilege that you could have if you are a US citizen is access to a special type of visa. As stated on the USCIS website, this option could allow your spouse to come to the United States with approval to live and work during the permanent residency application process.
The best way for you to streamline the process of bringing your spouse to America is often to do everything correctly the first time. For example, there are certain deadlines you would have to meet for things to proceed in some cases.
If you retain an advisor, he or she would probably also be able to provide relatively accurate outlooks based on the details of your case. Please do not think of this as legal advice. It is only meant to form a background for the topic.