RAM compatibility issue. Are there any comments or advice?

Question

RAM

Hey! I have little experience in upgrading my own hardware, so in order not to shove like a bull, I would like to know the opinion of others, you never know.
The point is simple. I want to increase the RAM in the system unit. I now have an ASUS PRIME B250M-PLUS motherboard (Socket 1151, Intel B250, 4xDDR4, USB3.0, Type-C, VGA, DVI, HDMI, mATX)
And it has 2 8 GB RAM boards (RAM 16Gb DDR4 2400MHz Patriot Signature (PSD416G2400K) (2x8Gb KIT))
Since this one is no longer sold .... you need to buy something new. And from here:
1. Will it be normal if I buy 2 new ones similar in terms of performance characteristics and insert them into free places (since at first for some reason I just wanted to take 1 board for 16 GB ... then I remembered that you can’t do this)
2. Advise decent brands and, if possible, leave the links of the RAM to chain stores, which would normally go
3. What should I pay attention to when buying? (same overclocking, frequency...?)
4. The most interesting thing is CL. I now have CAS Latency (CL) = 16. When choosing a new one, do I need CL to be the same? Or let it be less/more. Please provide as detailed an answer to this as possible.
5. And one more question... When I looked at the RAM... many are now a kind of "radiator". so here. Will it fit into my motherboard?

Answer 1

take any two more (the cheapest) at 8GB 2400MHz, it's
good if the timings are 16 (less = better, but there are none), take 17 is not critical,
and the radiators are from the evil one))) to dilute the buyer for extra dollars.

Answer 2

1. Normal, but it's better to buy a kit for 32, and sell the old one.
2. There are many brands, but there are enough chip manufacturers to count the fingers on one hand.
3. On the frequency + timings.
4. Should be the same. In the instructions for m / b ASUS PRIME B250M-PLUS, this is written.
5. The radiator sometimes "conflicts" with the cooler. We need to think about the size in advance.