Late to the party as usual. Sorry. 
Thanks for the tag @roisinkirby.
Hi @goldenraes. As independent HubSpot consultants, we’re intensely client-focused.
We only really use our blog to publish public-facing content in direct response to client need as interest arises and as the hosting / promotion platform for our digital deliverables (i.e. eBooks, eReports, Infographics, etc.). In fact, we intentionally publish ‘blog content’ that doesn’t show in our blog index and isn’t indexed in search. (by design)
- see Marketing Lab by M. Frank Johnson
We shifted to this model in 2017 when it became obvious that returns (i.e., CTR) from ‘blogging for SEO purposes’ would continue to decline significantly as large blogging concerns increased domination of the landscape and, dare I say most importantly, as Google continued their relentless canibalization of indexed content for use in SERPs as Instant Answers, Knowledge Graphs, etc.. In fact, Rand Fishkin (formerly Wizard of Moz) reported a 20% drop in mobile CTR from Google between 2016-2018 during his recent presentation at BrightonSEO -- a 30 min MUST SEE for anyone blogging in 2018 and beyond.
- see The Future of SEO Is On The SERP by Rand Fishkin
All that being said, we ran across a ThinkGroup article with lots of numbers about HubSpot blogging that may interest you. Dunno how good those number are, but remembered your query and thought this would be a good place to drop the link.
- see HubSpot and Marketo Blogs: a Side-by-Side Teardown
Again, sorry about being late to your party. Hope it still helps.
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Best,
Frank
Author the Perfect HubSpot Series
MFrankJohnson.com | Connect on LinkedIn
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