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Hey man, can you help me (and others) out with the list of these! At least 5-7 of them would be greatly appreciated.
Personally I recognize only 3 most common:
fixing hair at "the moment"
eye contact and looking down
fixing her body, clothes
Please can you list some more of these

especially those which can be noticed in public places (at the street, in the store, just passing by etc ect)
Hi, happy to help!
The 3 IOI's you mentioned above are indeed the most common out there. Some additional IOI's I experience BEFORE approaching are:
1. The interested female stops her entire group of friends near you. She will do this with a silly reason(excuse), like making plans where to go next (this happens a lot at outdoor festivals or big venues).
2. If she is by herself, the interested female tries to get your attention by making unnecessary noises/sounds, like tapping her nails on the table or re-seating herself when on a noisy chair.
3. If she is with friends, the interested female tries to get your attention by laughing or saying out loud irrelevant or even ridiculous statements to her friends, hoping you will overhear her or comment on it.
4. If she is with her friends and if the woman in particular is very bold (or drunk), she may even make direct statements towards you, like commenting on the way you dress/look.
5. The interested female stands/sits near you with no obvious reason. A great way to check if she is interested is by moving away after she stands near you and see if she tries to get near again. (this happens a lot at supermarkets, train/subway stations etc.)
6. When the interested female is already near, like sitting next to you in college, she may go for the "accidental" touch.
7. The interested female positions herself in a way so you can easily spot her and is directly in your line of sight. (this happens a lot in crowded places where people are standing still).
8. The interested female mirrors your body language, like crossing her arms when you do.*
9. The interested female tries to get your attention by acting clueless, hoping you will help her.
10. The interested female laughs when you're saying something "funny" to others. (this happens a lot in your social circle)
11. After initial EC is established, the interested female will do a very sneaky side glance to check if you're (still) looking at her.*
*ad. 8: This one is really powerful. If you're standing in line for example, she will stand the way you are standing (can be done very subtle like placing a foot in front of you). Now change to another position like putting your arms into your side and check if she mirrors again.
*ad. 11: Women are incredibly skilled in hiding their side glance. It can be like she is trying to fix her earring and "needs" to turn her head a little to the side for it so she can spot you in the corner of her eye. You need to be very alert to notice these side glances. (she will never turn her body/face a full 180 degrees when looking back at you).