Instead of using traditional stock footage to make your reel, get footage from us! https://www.EditStock.com. We have uncut dailies from films, music videos, and commercial. I actually developed the site in part exactly for the reason you mentioned above.
I believe what you’re looking for are effects by Robert Etoll https://www.robertetoll.com/albums. I’ve used tons of them on the productions I’ve been on. Until this post I only know of them as “etoll.” The package is expensive but you’ll use it on every project you do. Sample file attached.
https://www.EditStock.com. We sell short film dailies to people who want to practice editing. When you’re done with your cut you can upload it back to the site for free feedback from a professional editor.