I challenge you to tell me how to appraise domains without automation as a newbie.
You have to start by putting yourself in the shoes of your potential customers. The first thing you need to determine when evaluating a name is "How could someone make money or advance a cause by owning this domain?" What would they sell on this website, or how could they monetize it? If you can't see a way to make money developing the name, it is probably not worth much, if anything.
If I have a good idea of how my potential customer might use this domain to make money, then I can look at what market segment it is in and what the average costs of this product or service are. For instance, DiamondJewelry.com has a much higher price point than KeyChains.com.
I would also look at comparable sales on Namebio and see what domains in that niche have sold for. There is nothing wrong with using automated appraisals as part of the process. I use several and have a formula that incorporates those, with my other metrics, to give me a suggested price. But I still have to use my common sense and knowledge when figuring a price or deciding whether to buy or drop a name.
Other metrics you might consider are age, length, number of words, extensions already registered, traffic, parking revenue, domain history, DA, Google search volume, and Google search results. In the end, there are no automated means to find sellable domains. If there was, someone would have already developed an algorithm and owned all the sellable domains.
Using your list above, I just don't see anything with a demand.
Ihopy - who wants to own a name that makes you think about pancakes?
3 word when he wins, when god when, etc. may make OK personal blogs, but people have tons of options in 3-word domains and are not going to pay much beyond reg fee
Peas to you? A 3-word with a mis-spelling? Nah.
FlopAbout and AgainstAWall don't bring any monetization ideas to mind. Maybe they have a place as something cute and cheap in a larger portfolio, but I would have passed on both.
Little to no search volume for any of these, I assume they are all hand-regs without any history, age, or traffic.
Instead of asking everyone for some silver bullet to domain selection, maybe you would be better served by spending the time going over sales reports, watching GoDaddy expired auctions, etc. to get a feel for value.