The Huawei P30 Pro actually features AMOLED displays made by LG
Before the Huawei P30 phones were launched last month, rumors had it that the devices would feature AMOLED panels made by Samsung. It would appear that the reality of the matter doesn't exactly conform to that idea.
Going by AnandTech's new review on the two devices, the regular P30 does, indeed, sport a display made by Samsung. The P30 Pro, however, doesn't, and it would appear that the more expensive device chose to go with displays made by LG and BOE.
The Mate 20 Pro did the same, in fact, and early units of the flagship were plagued by a green tint issue that looked to be peculiar to devices with the LG panels. Of course, the Mate 20 Pro features a QHD+ display, while the P30 Pro makes do with a 1080p one. As such, it's unlikely that we get the same issues on the P30 Pro. AnandTech also believes that the green hue issue may have been due to the Magnachip DDICs on those units.
Samsung is widely regarded as being the best manufacturer of mobile OLEDs, so it's a bit baffling that Huawei went with Samsung on the cheaper device, and used the traditionally worse LG panels on the more expensive P30 Pro. Newer LG OLEDs are a massive improvement over the earlier ones, though, so this shouldn't be an issue. For example, the smaller Pixel 3 uses an LG panel too.