What you came for

This is the answer on the programme.

And it's almost useless.

Three questions the Top 100 can't answer

1. How did a trend actually get here?

2. Is it one thing — or several different things?

3. What does it mean for MY neighbourhood?

What we actually have

• Five years of data, captured every week

• Every book — not just the Top 100

• Down to rank 40,000, not just the chart

• Reader behaviour, not only Amazon's shelves

1,278 titles

passed through the 100-slot Romance Top 100 in the last year

The chart is a turnstile, not a shelf

Distinct titles seen in the Romance Top 100, rolling.

Your neighbourhood, not the whole store

Sports romance grew — and it became hockey

Any sports romance vs hockey, share of the Gay Romance Top 100, 2021–2026 (2026 = year to date).

A wave and a staple look different

Fantasy Top 100. Fae peaked mid-2024; dragon is a five-year constant.

Under the hockey wave, the MM mix is shifting

Selected tropes as a share of the Gay Romance Top 100, 2021–2026 (2026 = year to date).

Overall 'Romance' is academic.

What changed in your neighbourhood is actionable.

Covers

FILLER — every cover, read and tagged by machine

Two covers, their machine-generated tags. Same art style — opposite everything else.

Romance covers crossed from photographic to illustrated

Romance Top 100, four time points 2021-2026.

Same shift, opposite colour story

Both shelves went illustrated (left); only Romance's palette brightened (right). 720-cover run, Top-100 panels.

It was the hand-drawn romcom look that won

Romance Top-100 covers by illustrated sub-style.

You couldn't see any of this from the Top 100 alone.

It takes every cover, at depth, tagged by machine.

The author neighbourhood

Does Amazon's shelf match how readers actually read?

No — in both directions.

FILLER — Amazon's shelf vs your readers' map

Amazon's shelves (zones) vs reader neighbourhoods (bubbles): one shelf holds many; some straddle two.

FILLER — readers mostly stay in romance

Reader neighbourhoods from also-bought behaviour, coloured by Amazon shelf. Most are Romance.

FILLER — one 'Romance' shelf, many neighbourhoods

Amazon's single Romance shelf is really all of these separate reader neighbourhoods.

FILLER — and some neighbourhoods cross the store lines

Romantasy spans Romance+Fantasy; Gay Romance spans Romance+LGBTQ+ — one neighbourhood, two shelves.

Don't trust your category page.

Look at who your readers also-buy.

You can see the wave coming

You think one blockbuster started the trend.

It didn't.

The midlist was filling up years before the chart noticed

Grumpy-sunshine's share of new releases (vs 2021); random comparison terms stay flat.

While the chart showed one book, the midlist showed 27

Grumpy-sunshine, the two years before breakout: books published per quarter vs on the Top 100.

Romantasy: watch the neighbouring store

'Romantasy' in Top-100 blurbs. Fantasy leads Romance by ~2 quarters.

Hockey: a genre forming in real time

Distinct hockey books (bars) and the top book's share (line), Romance Top 100.

Marriage-in-crisis: below the waterline

Marriage-in-crisis, 2026 Q3: ~513 different books in the wave vs ~1 on the Romance Top 100.

A manufactured wave has a signature

~3 books per author name

a sealed reader cluster

Trends arrive in more than one way

• Cross-store spillover — romantasy

• A genre forming in the chart — hockey

• Below the waterline — marriage-in-crisis

• … and the data tells you which

By the time a trend has a name,

the data has been watching it for years.

The data tells you which wave you're looking at.

Your judgement decides what to write.