Hi Jay,
I believe there is genuinely nothing to be worried about especially as All Websites under Group have their own unique and original content, but be careful to ensure that Google doesn't perceive that you infringing on Google Webmaster Guidelines, by trying to create a network of websites to inflate your Google rankings, e.g through Black-Hat tactics such as Site-wide exchanged links, as this will bring you problems to ALL your websites, and consequently be punished for same. There should be no ramifications if you have followed Google Webmaster Guidelines, find them here: <cite>https://support.google.com/webmasters/answer/35769?hl=en and here: <cite>https://support.google.com/webmasters/answer/35769?hl=en</cite></cite>
Any links intended to manipulate PageRank or a site's ranking in Google search results may be considered part of a link scheme and a violation of Google’s Webmaster Guidelines. This includes any behavior that manipulates links to your site or outgoing links from your site. So kindly go through same guidelines and check if you in contravention of same guidelines.
Thank You
