Not all USB-C ports support all features of USB-C. Some computers and smartphones support data only for flash drives while some others support video out and power as well.
Here is the list by manufacturer of computers and smartphones that support full feature USB-C:
Dell
Dell XPS 12 9250, 13 9350 / 9360 / 9365 / 9370, 15 9550 / 9560 / 9570 / 9575, Latitude 5290 / 5480 / 5580 / 7275 / 7280 / 7285 / 7290 / 7370 / 7380 / 7390 / 7480 / 7490 / 7520 / 7720 / E5570, Precision (certain configurations) 3520 / 15 3510 / 5510 / 5520 / M7510, 17 M7710, Alienware 13 / 15 / 17
Apple
2016 / 2017 / 2018 MacBook, MacBook Pro, iMac, iMac Pro
Acer
Aspire Switch 12 S / R13, V15 / V17 Nitro, TravelMate P648, Predator 15 / 17 / 17X, Chromebook R 13
ASUS
ROG GL / G5 / G7 / GX / Strix, ZenBook Pro UX501VW, ZenBook 3 Deluxe / Pro, Transformer 3 Pro, Schenker XMG, Q524UQ 2-in-1 15.6, Chromebook Flip C302
Gigabyte
Aorus X5 15, X7 DT 17, BRIX / BRIX S
EVGA
SC15 / SC17 Geforce GTX 1060
Pixelbook / Pixelbook 2
HP
Elite X2 1012 G1 / G2, Z1 Workstation G3, Spectre 13.3 / x360, EliteBook 1040 G4 / X360 G2 / X 360 1020 G2 / Folio G1, ZBook 17 G3 / 17 G4 / 15 G3 / 15 G4 / Studio G3 / Studio G4 / Z2 G4 / Z4 G4 / Z6 G4 / Z8 G4, Chromebook 13 G1
Lenovo
Legion Y720, IdeaPad Y900, Miix 720, Thinkpad P 50/70, T 470 / 470S / 570, X270, X1 Carbon, X1 Yoga, Yoga 370 / 900 / 910, P50 / P51 / P51S / P70 / P71
MSI
Phantom / Phantom Pro, Ghost / Ghost Pro, Stealth / Stealth Pro, Titan / Titan Pro, Dominator / Dominator Pro, Vortex G65
Razer
Blade / Stealth / Pro
Samsung
NP900X5N, Notebook Odyssey, Notebook 9 15 Inch, Galaxy Note 9 / Note 8 / S9 / S9+ / S8 / S8+
HTC
HTC 10 / U11 / U12
LG
Gram 15Z970, LG G5 / V20 / V30
Intel
NUC6i7KYK / NUC7i5BNH / NUC7i5BNK / NUC7i7BNH / NUC6i7KY
Toshiba
Portege X20W / X20E / X30 / X30-E, Tecra X40 / X40E
Sony
VAIO S11
Clevo
P 750DM / 770DM / 870DM
FUJITSU
Workstation CELSIUS H760
Microsoft
Surface Book 2, Surface Go, Lumia 950 / 950 XL
Zotac
ZBOX / MI549 / MI552 / MI572 / MI553
Huawei
MateBook X Pro