What was the list of the various views of slavery in the west?

Well the main concern of many republicans in the Union during the time was to keep the West free as the nation expanded westward. The South (as well as many Northerners) were in support of popular sovereignty, which took place in the states of Kansas and Nebraska. Men from both the North and South literally packed up there belongings and traveled across the country to keep those states free/slavery-advocating. Along with this, you can consider the Alamo, in which American-Texans rebelled against the Mexican government. Much of this was due to the fact that the Mexican government forbidden slavery, which upset the southern Americans residing in northern Mexico (now Texas).

In short, the West was far less concrete as far as views on slavery-advocacy goes. Generally, it was either abolitionist or slavery-supporter. Some people (generally Northernors) supported the idea of deporting the slaves and sending them to their native Africa, however this idea didn't last long.