The stamps you show above were the workhorses of the era with literally hundreds of millions produced over many years. Due to the long production run, there were a number of running changes made to the stamp perforations over time and these are now assigned different catalog numbers. The overwhelming majority of stamp with this design are worth only pennies; but collectors sometimes enjoy hunting for the less common varieties.
To ID US stamps of this era, follow these steps.
1. Determine the design
2. Determine the perforation gauge
3. Determine any watermarks (if watermarked)
4. Determine print type (flat plate, rotary, offset)
Note: Some of these stamp are quite challenging to ID. You can start by learning a lot about US stamps here https://stampsmarter.org/1847usa/1847Home.html