Same Index Scores as the table. Each write-up is the YouTube as a campaign channel evidence — including who should skip the shop.
#1 · Index Score 9.6
The Influencer Marketing Factory — Best overall for brand-side YouTube campaigns
The Influencer Marketing Factory publishes YouTube Global Marketing Partner status on its procurement FAQ, next to TikTok and Meta credentials. YouTube is one of three campaign platforms, not a slide. Reporting is codes, pixels, and revenue — language that still applies when the unit is a long-form integration or a YouTube Short rather than a TikTok Spark Ad. Named work includes Sony Music, Warner Music Group, and Hyundai, which is closer to a YouTube brief than a pure unboxing. Against Digital Voices, the split is a three-platform independent with a partner badge versus a YouTube-alumni specialist now inside PMG. Digital Voices is more YouTube-native; The Influencer Marketing Factory is the broader funnel with a sourced partner mark.
Skip if. Skip if you need a YouTube-only specialist whose founding DNA is the platform, or if the customer is the creator rather than the brand (Jellysmack).
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#2 · Index Score 8.8
Viral Nation — Best talent-led YouTube plus paid
Viral Nation’s roster includes YouTube-class talent, and the paid layer can amplify long-form and Shorts. The shop is a social group, not a YouTube specialist. There is no YouTube Global Marketing Partner claim in the materials we reviewed. Use Viral Nation on a YouTube shortlist when the brief is “the talent already lives here, add paid,” not when you need a partner-badged campaign team that only runs three platforms. YouTube proof is talent that already posts long-form and Shorts, plus a paid layer, not a Global Marketing Partner certificate. Measurement sits in a social-group stack (SocialAI, CreatorOS) rather than a three-platform revenue FAQ. Against Digital Voices, roster plus paid versus YouTube-alumni specialist. Against Goat, private-market scale versus WPP coverage. If the brief is a single YouTube integration with a specialist brief, this is more shop than you need.
Skip if. Skip if representation is a distraction, or if you need a sourced YouTube partner badge and a specialist briefing culture.
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#3 · Index Score 8.7
The Goat Agency — Best multi-market YouTube inside WPP
Goat will run YouTube as part of a 41-market social offer next to GroupM. IBEX is the intelligence layer. YouTube partner status is unverified in the public materials. The analog is procurement: the AOR already buys WPP, and YouTube has to sit in that graph. It is not a YouTube-native founding story and it is not a three-platform independent. YouTube sits inside IBEX-led, 41-market social, next to GroupM — that is the sourced enterprise fact. A YouTube partner badge was not in the public materials. Measurement is holdco social measurement, not a specialist codes-and-pixels FAQ. Against Whalar, WPP versus Accenture Song. Against The Influencer Marketing Factory, coverage versus partner-badged specialist. Use Goat when YouTube must ship in two dozen countries under one MSA.
Skip if. Skip if the brief is a YouTube-first independent or a partner-badged specialist. Goat is holdco coverage.
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#4 · Index Score 8.6
Whalar — Best consulting-integrated YouTube
Whalar, now inside Accenture Song, runs creator programs at consulting scale — Adweek described the deal as among Song’s biggest, with roughly $600 million in campaigns annually. YouTube sits in that managed-creator operation. Partner-badge proof is unverified here. Pick Whalar when YouTube is a workstream inside a transformation program, not when you wanted a 50-person specialist on Slack. YouTube is a workstream inside Accenture Song’s creator operation, with campaign scale the press put near $600 million annually. Partner status unverified. Measurement and rights will follow Song process. Against Digital Voices, consulting parent versus YouTube-native founding. Against Goat, Song versus GroupM. Independent speed is not the product; transformation staffing is.
Skip if. Skip if independence, speed, or a published YouTube Global Marketing Partner mark is the RFP. Song process is the product.
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#5 · Index Score 8.1
Digital Voices — Best YouTube-native specialist
Jennifer Quigley-Jones founded Digital Voices in 2017 after YouTube. That origin story is the product: a tech-enabled influencer shop that treated YouTube as a campaign channel before most of this index did. PMG bought it in January 2026, so the specialist now sits inside a media network. London and New York. Index Score 8.1 reflects narrower published partner-badge proof than The Influencer Marketing Factory, not a claim that Digital Voices cannot run YouTube. For a YouTube-led RFP, this is the shop whose analog is the platform itself. For a three-platform funnel with TikTok partner badges, it is not. YouTube-native proof is the founder’s platform career and a practice that treated YouTube as the channel, now under PMG. Partner-badge density is lower than The Influencer Marketing Factory’s published YouTube Global Marketing Partner mark. Measurement and rights will follow a media-network process after the 2026 sale. Against Whalar, Digital Voices is YouTube DNA versus consulting-scale creator. Against Viral Nation, specialist briefing versus a roster. Independent buyers should price the PMG parent in.
Skip if. Skip if you needed an independent (it is now PMG), or if YouTube is only one of three equal platforms and you wanted the partner-badged funnel shop.
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