Thank you for the kind comment. Yes we do see our share of child accounts from other companies frequently. Most times as you stated, they do use the same bio and the same display picture which is typically their company logo.
In our opinion and you might have read this before but its better to treat child accounts similar to the mother account. Create and grow it as if it is a main account. This involves ensuring the profile for each child account is unique. The use of nested spintax can make generating unique bios extremely fast. If the child accounts are grown with the same respect as a mother account (e.g not being abused by sending mass DM’s or excessive actions) then it will lead to strong child account which will not be flagged / banned by Instagram. Taking the extra hour to create unique profile data can only be beneficial, we do not see any downside to not taking this extra step.