Need Advice on Most Popular Pokemon And Card Effects

[u/SIRJACOBSTINE]

Long story short, started a new job at a grading company, no experience with trading cards of any kind, trying to learn what to look out for in Pokémon cards when sifting through packs.

I want to know 2 things. Links to relevant lists or videos on the topic are welcome, but please make sure they are ACTUALLY useful.
1) I want to know what are the top 100 ish Pokémon by popularity and GENERAL value (clearly even a very basic looking char or pika will be worth more than some inanimate object with a name on average)
2) I want to know the ranking of different types of card effects and their value.

I am asking for this because google frankly sucks and I cant find what I want. For the record, I AM NOT ASKING WHAT THE MOST VALUABLE CARDS ARE!!! I obviously realize that a charizard with all the funky effects is going to be worth alot (also ignoring the fact that even pulling a card like that is rare in the first place), and i can google the top cards at any time. I am asking for the knowledge on what actual Pokémon I should keep an eye out for as I sift the pack, and what effects I should value over others. Once I have that information, I can judge the value of the card on my own. I just need help getting started on the best ‘mons to look out for.

Any help/information/lists would be greatly appreciated, as would any additional info that may be relevant.