Competitor sponsor gap audit: the YouTube niches your rival keeps renewing that you barely tested

The short version: LMNT and Liquid I.V. sell close substitutes, but on YouTube they run almost opposite playbooks. In the twelve months to October 27, 2026, LMNT sponsored 135 health and fitness channels and renewed 35 of them with a separate booking. Liquid I.V. sponsored 12 and renewed 3. Flip the table and it runs the other way: Liquid I.V. renewed 8 comedy and entertainment channels with separate bookings, while LMNT renewed 1.

Each brand has a niche it keeps renewing that is close to empty on the other brand’s list. If you were either one, that is the first place to test next year. This post shows the gap table, five takeaways, and how to run the same audit for your brand and any rival with your AI agent and the ThoughtLeaders CLI.

How this differs from mapping a rival’s channels

We already have a guide to finding the YouTube creators your competitor keeps sponsoring. That one gives you a list of channels to copy. This one asks a different question: which kinds of channels does your rival keep paying for that you have barely tried? You compare two brands niche by niche, and the output is a short list of niches to test, not a list of channels to poach. Once you have a niche, the channel-level guide and look-alike search take over.

The worked example: LMNT vs Liquid I.V.

Two electrolyte drink brands that both sponsor a lot of YouTube. We pulled every sponsored video for each brand from the ThoughtLeaders corpus, published October 27, 2025 to October 27, 2026, then sorted the channels into buyer niches.

	Channels sponsored	Bookings	Repeat channels	Renewed with a separate booking
LMNT	459	613	212	119
Liquid I.V.	226	274	83	38

Two definitions do most of the work here:

• Booking: sponsored videos on the same channel less than 60 days apart count as one booking.
• Repeat channel: the brand appeared on the channel across 60 days or more, either because it came back after a break or because it stayed on. Renewed is the stricter version: two or more separate bookings.

LMNT sponsors about twice as many channels, so raw counts alone would just say ”LMNT spends more”. The share column fixes that: it is the niche’s share of each brand’s own channel list.

The gap table

Niches where neither brand sponsored at least 10 channels are left out, as are the 61 channels we couldn’t place. Data pulled October 27, 2026.

Five takeaways

1. The obvious niche for an electrolyte drink is where the gap is widest. Health and fitness is 29% of LMNT‘s channel list and 5% of Liquid I.V.‘s. LMNT sponsored 70 fitness channels for 60 days or more and renewed 35 of them with a separate booking. Liquid I.V. renewed 3. On this data, it is the niche the closest rival leans on most, and it is barely on Liquid I.V.‘s list.

2. LMNT‘s next tier is outdoors, homesteading and cars, not more fitness. LMNT sponsored 46 outdoors channels (18 repeat), 38 home and DIY channels (15 repeat) and 21 automotive channels (10 repeat). Liquid I.V. has 4, 8 and 7. These are active audiences outside fitness content. LMNT booked Cameron Hanes 3 separate times and Linnea & Akela 3 times in the window.

3. Liquid I.V. keeps renewing comedy and entertainment, where LMNT has barely tested. Liquid I.V. sponsored 21 comedy and entertainment channels and renewed 8 of them with separate bookings, tied for the highest renewal count on its list. LMNT has 3. Liquid I.V. booked Camp Counselors Podcast 3 times and The Toast 2 times. For LMNT, this is the clearest underexplored niche: a rival in the same aisle keeps paying for it.

4. Liquid I.V. also spreads into beauty and pop culture. Beauty and fashion is 12% of Liquid I.V.‘s list (28 channels, 10 repeat) against 3% of LMNT‘s. Commentary and pop culture is 10% against 2%. Fewer of these are renewed with a separate booking, so treat them as tested rather than proven.

5. Shared niches are not gaps. Family and lifestyle channels sit high on both lists (45 and 35 channels, 23 and 18 repeat). A gap audit is most useful when it skips the niches you both already buy and points at the ones only one of you has found.

None of this says either brand is doing it wrong. We can’t see their sales, and a repeat sponsorship is strong public evidence that a channel works for a brand, not proof of return. What the table gives you is a ranked list of niches where a close competitor has already paid to learn something you haven’t.

How we built it

• Source: sponsorships detected in the ThoughtLeaders corpus, on videos published October 27, 2025 to October 27, 2026. A detection is a spoken read or a sponsor link in the description, so a channel that links a brand in every video counts as one long booking, not dozens.
• Niches: each channel was sorted into one buyer niche from its name, about text, AI summary and topics, the same method as our sponsorship cost by niche study. 61 channels were too ambiguous to place and are left out of the table.
• Neither brand is a ThoughtLeaders client. All numbers are public sponsorship activity, not deal data.

Run the audit for your own brand

You need the ThoughtLeaders CLI connected to your AI agent (Claude Code, Codex, Cursor or similar). The whole audit is four steps.

1. Resolve both brands. Your agent runs:

• tl brands find "<your brand>"
• tl brands show "<your brand>"
• tl brands show "<rival brand>"

This confirms your agent is looking at the right brand records before it pulls anything.

2. Ask for the gap, in plain words.

Pull every YouTube channel that <your brand> and <rival brand> sponsored in the last 12 months. Group the channels into niches. For each niche, show channels, bookings and repeat channels for both brands, as a share of each brand’s list. Then list the niches where <rival brand> has repeat channels and we have few or none.

Your agent can also check the rival’s repeat channels directly with tl brands winner-channels "<rival brand>", which lists the channels a brand has sponsored again and again.

3. Vet the gap on YouTube. Open two or three channels from each gap niche with the Chrome extension installed. The Top sponsors panel shows the brands that sponsor the channel most, so you can confirm the rival really came back and see which other brands are buying there.

4. Turn each gap into a small test. Pick two or three channels per niche, get several proposals, and compare them on value, not just price. Use look-alike search to find channels like the rival’s repeat picks that it hasn’t booked yet, and check how often a channel’s sponsors come back before you commit.

Reading your own gap table

• Normalize by share, not counts. A bigger rival will beat you on raw counts in every niche. The share of each brand’s list is what shows a different playbook.
• Weight renewals over one-offs. A niche where the rival tested 20 channels once tells you less than one where it booked 8 of them again.
• Check the niche, not just the label. Automated niche labels are good but not perfect. Read the channel names in your biggest gap before you build a plan on it.
• Re-run it every quarter. Gaps close when the rival stops renewing, or when you start.