Hi @shivaadapa
First check the cmdb_rel_type table to see the number of custom relationships types created, you can spot the one by seeing the created by attribute, the oobs should have 'admin' or 'glide.maintain' some cases you will find some Servicenow employee user id those were created OOB. Custom relationship type will show your user id in created by if you created it or your co-workers or your CMDB admins.
You create a report on table cmdb_rel_type and set the below sample conditions as filter with created by not contains OOB created by users
If my response helps to solve your issue. Kindly mark it as helpful & correct. It will be helpful for future readers!
