What type of SSL certificate is suitable for level 3 and 4 subdomains?

Question

Digital certificates

We can not decide what type of certificate we need in our case.
There is a main domain example.ru, it has many third-level subdomains *.example.ru, but some subdomains also have their own *.domain.example.ru subdomains.

example.ru
*.example.ru
*.domain.example.ru

From what I read on the Internet, it turns out that we need two Wildcard certificates, or is there some type that can suit us better?

Answer 1

wildcard is only suitable for the 3rd level domain, for the 4th level you need your own wildcard

Answer 2

Let's add some information from ourselves -
In general, there is another type of SSL certificate Multidomain Wildcard. His direction is to close the required number of subdomains and their subdomains or different domains with just one certificate.
example.ru
*.example.ru
*.domain.example.ru
*.domain2.example.ru
*.domain.ru
and so on.. but the cost is expensive, for example, with 4 SANs included, such a certificate for 1 year will cost 20K . Therefore, it is sometimes cheaper to buy several WIldcards, since their price for 1 year is 6,990, we are talking about emaro-ssl.