Probably unlikely, since some of the animations would be profit from external sound assets, and those cannot necessarily be shared.
I've done sounddesign for some of the animations in my game (which is a lot of work) but at the end of the day, you'll probably have to bite into the sour apple and design the effects yourself.
I wish there was a shortcut, but unfortunately, there isn't, and it's unlikely that the Animation creator is going to deliver additional sound effects since that's likely not his/her forte.
At the end of the day, you can do a lot with the default sounds of RMV (plus the additional ones added in the DLC that come with the default RMV).
The way I go about it is I isolate the frame where the effects climax is and give it a target flash in a color linked to the effect's color, and a sound effect that matches the effect's climax.
Once that's done I go to the buildup phase and look for key frames that initiate the effect and give them a sound effect and afterwards I do the same for the "outro" effect of what follows the climax so every visible change in the effect has an audio effect assigned to it.
Your best friends are changing the sound effects pitch & volume. You can layer multiple soundeffects across each other to produce a new sound effect and modulate them through volume. (e.g. an explosion fused with the wooshing sound of the wind)
And you can change the sound effect itself quite a bit by changing the pitch.
Other than that, there's a lot of websites that make sounds available at free commercial license and you can google for Soniss soundpacks, they're releasing a free pack of their assets every year, and you can find all of them via google & download their massive asset collection for free (with rights to use them commercially).
But at the end of the day, it's unlikely someone has the entire animation library with sounds ready to go. Even I only have a dozen or so finished, and I make new ones based on when I need them.