There are lots of small companies around the world that import Ukuleles, usually Sopranos only but occasionally other sizes as well, from China, brand them with their own name and sell them on. They are not all importing exactly the same models but they are all of similar quality and cost. This is a list of the ones I have seen on sale somewhere outside China and that don't appear to be part of a larger distributors catalogue.
This is by no means a full list!
Academy (rebrand Aiersis with a sticker over the sound hole label)
ADM
Ala Mouna
Alic (plastic bowl back, fretboard - with zero fret - and bridge; sometimes the soundboard is highly decorated)
Ali'i
Amahi
Amigo (Possibly a KMC Music brand?)
Amigo by Lotus a different manufacturer and made in Romania
Apollo
Arrow
Ashley
Austin (different logo to the Chinese made Austin Cavaco)
BadAax
Barcelona
BC (Best Choice)
BeBop
Bismark
Bontempi British distributor of low budget and toy instruments
Brighton
Bryce House brand for Internet resellers Instruments4Music
Burswood
C.Giant
Cadenza
Carioca
Carlo Robelli (Sam Ash)
Carols
Chantry use to be the brand of the charity Sue Ryder
Cherish
Cherrystone
Chord
Classical Guitar(?)
Classic Cantabile maybe an own brand of Musikhaus Kirstein along with Rocktile and Beech Buddy
Clifton was distributed throughout Europe by Lidl
Commodore
Conrad (electricals)
Corde
Daisy Rock Sometimes called DRG, A fairly budget range of instruments aimed at tweenage girls
Davidson (Guitars)
Delta Ridge (might be better than I think?)
Denver (Sopranos and a Concert; part of a multi brand distributors range)
DiMavery
Djeco (largely plastic)
Eleca
Elevation
Everdeen (comes as a Concert scale as part of a range of instruments)
Ever Play
Ferris own brand of Ferris Music in Ireland
Firecracker
First Act (plastic and the same maker as the plastic Disney range)
Fortune
Fredrick
Galveston
GBSpro founded in 2008 by Prism Events, (a promotion company around Curitiba - Paraná).
Gigsby
Gitano
Godman
Godmen
Golden Ton
Gomez
Gonzales
Granada (only seen them on sale in India so possibly Indian made?)
Green Hill
Gremlin (nothing to do with the European distributor Gremlin Music)
Groov-e
GSI
Guitarist
Hala
Hape (Early Melodies)
Harmonia
Harmonica
Harrington marketed by Stuart Harrington in the UK in 2014 the website has now gone and facebook page not updated since 2014
Hawaii Kai
The Hawaiian Ukulele Company Established 1984
Heavy Metal
Hibiscus
Hola!
HonSing (Chinese factory brand widely sold through small internet outlets)
Hula Beach
Irin (Whole range of Chordophones including Guitars, Mandolins, Violins - and all the cases and accessories)
Janod
Jason
K2
Kahana
Kalos by Cecilio
Kalua (only seen them in Malaysia and nothing to do with Terada Gakki)
Kansas
Kapua
Karteer
Kealoha (US firm founded 2015 selling rebranded plastic Concerts - nothing to do with the Australian Kealoha or any of the historic ones)
Ku Ku I Po
Kukui
Lauren
Lawson (Tenor Taropatch with dolphin sound holes; very prone to falling apart!)
Lisbeth Dahl
LPD Music (US distributor who own Little Grass Shack reg. 2012, which just has a picture of a hut on the headstock and also Crestwood but they might not use this any more?)
Maestro (Internet reseller based in Houston, Texas)
Mad About Music
Maika'i (from Japan and nothing to do with Jacy Inc.)
Malakai
Malani (established 2010)
Marlin (may be the latest incarnation on a name that has been around since the 1960's?)
Martin Smith
Maui
Maxwell
Merlin
Monterey
M.P.M. Instruments
MSA
Music Fidelity
Nevada
Octopus
Okina
Omalha
Onyx
P&P
Pali
Phoenix
Playtech
Polynesian
Pro Guitar
Pure Tone
PylePro
Rainbow Colours
Ready Ace
Reno
Rich Music (made in Korea)
Rio
Rochester
Rocket (nothing to do with the old Baritones or Norman Music's UK range)
Rocket Dog
Rose
Rosetti (Large UK Distributor founded 1936 who also own the brand Adam Black - or just Black)
Rosling's
Rouge
Royal
Santa Rosa
Santini
Sassafras
Sawtooth (possibly US music chain GoDps Music's own brand)
Seedling (says its distributed "exclusivity by Harrods of London" and is a paint it yourself model)
Sepia Crue
Sheffield (the 2015 distribution for Lidl in Europe)
Sherwood (from China)
Shine
Simpsons (Guitars) - and nothing to do with the TV Show
Starfire
Stretton Payne
Strings and things (UK distributor who include Kona and Woodstock as their brands)
Sunnylife (designed by Shine Instruments Australia)
Sunwoif
Tara
Theodore
Tiger
Tom & Will (some kind of European distributor)
Ukulele Workshop (Budget Ukuleles painted up, branded and sold through esty)
Voggenreiter
Volt
Waikiki (looks like a different chinese maker to all of the other Waikikis around this really is a popular name)
Westwood
Wet (they are sopranino)
WMC (was the own brand for Westside Music Centre now called Hartnoll's Guitars)
Wikiwiki
Woodnote
Woods (Guitars)
Woodstock Chimes (marketed by a US windchime Company)
World Playground (a fairtrade ukulele made in Indonesia)
And I sure there are many more!