There is a wide range of links removal service, CognitiveSEO, Linkdelete etc... The best thing to do is a manual search tbh.
I provide some too, the best way to do it is with Ahref, Majestic, GWT report + a link detector then do all the work of outreach with mail merge.
Usually I use mturk to find the contact infos then set up a mail merge and do a reconsideration.
If you want help PM I can put you on the right track. It is really a tedious process especially the reconsideration request and it's random approval.