that's not linear graphite, at least on the butt - it's woven.
Matrix is a current manufacturer of woven graphite blanks.
Lamiglas makes use of a woven graphite butt layer in their Triflex inshore rods.

Don't know who might have made them in the past. My Japanese 7'9" XUL rockfish rod uses a woven butt.
It begins with glass, an exposed glass tip, linear graphite over 70% of the blank, and woven graphite layer on the butt - it would make a great dry-fly rod - throws 1/2-g, protects 2-lb test, and has a powerful butt for turning fish.
It's actually the same idea as a flared butt on a cane rod - a light action rod with fish-handling power in the butt.

Japanese Rockfish rods are starting to get a following in the US, had a following in Europe longer - only the Japanese would design UL and XUL rods just for the salt.
You can see some more if you search Rockfish Rod on ebay.
Just stumbled on this 5-pc, which looks really cool - https://www.ebay.com/itm/Hara-TIGA-rod- ... 4310412881
(the Japanese are big on multipiece, because they travel public trans to get everywhere, and a long rod on a train would lose face)

NorieS makes the high-dollar version, which my two aren't, and am delighted with them.

I hunted these down beginning with Rakuten 8 years ago, then used Noppin for my Japan broker to buy them when I had the links to what I wanted to buy - a reliable broker, great English, and better shipping than Rakuten's shipping broker.
But now you don't have to go to that trouble - Japan vendors are coming to us on Ebay, and major tackle brands are picking up the trend.

My niche is canal and dock fishing under the lights - bought them for kid-fishing nursery seatrout, throwing weightless bait rigs up to sail in the wind.
Soon found they were great for schoolie trout, and incredible for sight-fishing large seatrout, when the key is matching small bait size.

the small is 16"
also about the best fillets the Gulf coast offers