There are so many things to consider when buying the right laptop, like CPU, GPU, RAM, etc... so I'll help as much by simplifying. Hope it helps.
GPU: If you're not gaming or doing anything intensive graphically, you don't need a discrete (separate) GPU. So your options are not bad and you're cutting a lot of costs. The Dell has one but it's so old that it would not be an advantage, in my opinion.
But...
STORAGE: I think most people know what it is, but when dealing with laptops/computers, there are two options: HDD vs SSD. I think it's the most important out of all. HDD is older and cheaper, but SSD are unbeatable in terms of upgrade. No matter how experienced you are with computers, changing from HDD to SSD is the greatest jump you can do. It's like using an ATO, automatic feeder, doser, DC pumps, etc... all combined versus all manual. The Dell and Acer both have HDD, so I would not recommend them. The ASUS has SSD (eMMC) but the amount of storage is 64GB, which is less than smartphones nowadays. The But HDD is fine if you didn't experience SSDs yet. And you can always upgrade your hard drive if you want to by opening the case, buying SSD, and installing.
CPU: Basically, it's the processing/brain of the computer. Nowadays, even the standard CPUs are good enough for browsing internet, watching videos, editing documents, etc. So I would suggest anything on the newer side, as it will satisfy your needs. The last one (Dell) starts is i7-4510U, which is the higher model of that year i3<i5<i7, but we're in the 9000s, so that one is like 5 years old now I believe. So i3, i5, i7 starting with 8xxx will be my suggestion. The Acer is i3-8130 (lower tier of that year but more than good enough for basic applications), but much more recent. Intel made many improvements in the 8000s, so anything starting with 8 or 9 will be best. The Chromebook is M3, which is a step below the i3, i5, i7, but it is good enough for your applications, but will slow down when you do higher intensive processes.
CPU Comparison Link:
CPU Comparison
RAM: It's similar to storage, but just for how much it can store at that moment, unlike the storage for videos, files, pictures, etc. For example, Google Chrome requires RAM to keep all the pages you opened available to you, so you can switch back and forth. If you're not gaming, then I think 8GB is more than enough for you. The Dell is 16GB, Acer is 6GB, and ASUS is 4GB. Older generations have slower performance, but that's going into too much detail.
My thoughts: None of them really seem like good deals. One is older, one has very limited storage, and have HDD. You can get so many better laptops, even 2 in 1s with better specs at a lower price.
Good Luck!