The 250 million ARB will be focusing on all verticals. Once GCP is set up, Arbitrum Foundation will consult with GCP in order to make sure that grant amounts are not duplicated.
Under this thread (Arbitrum Foundation Transparency Report 2023 - #4 by Mark1) you may find the Grant Transparency Report that shares more details on how grant decisions are made. In the upcoming transparency report, Arbitrum Foundation will be having a dedicated section to report how the fundings are spent. Please note many grant deals are with institutions that have strong confidentiality requirements, therefore Arbitrum Foundation would only be able to share high level details of strategic grants.
Having public data on expenses is a significant disadvantage in the growth of the Arbitrum ecosystem because our competitors do not have open data on expenses, and if our data is public, they can simply look at the data and then use it to outbid us on future partnership deals. Simultaneously, projects that are negotiating a grant will also be able to use this data to come with unrealistic expectations.