Another good choice is https://opensource.org/licenses/BSDplusPatent , which combines the 2-clause BSD license with the explicit patent clause from Apache 2.0. That gives you GPLv2-compatibility as well.
(Note that this is unrelated to the unfortunately similarly named license from Facebook, which is not a FOSS license.)
Firstly, AFAIK all of the licenses that ALv2 is incompatible with are obsolete and superseded versions.
Secondly, the ALv2 is file-scoped, so you can typically combine a library licensed ALv2 and another one with an incompatible permissive or weak copyleft license.
In practice this means that you'll have a problem combining ALv2 with old versions of strong copyleft licenses, e.g., something licensed GPLv2-only.
This is certainly an issue to consider for a project like LLVM, but of lesser importance for the majority of smaller scoped libraries.
I was always searching for this license, but I had previously only found The Clear BSD License, the BSD license with a PATENTS-NOT-INCLUDED clause (oops), and the Universal Permissive License, which is a general permissive license WITH a patent clause, but too obscure to inspire confidence among other developers.
Now I'm going to recommends BSDplusPatent instead of Apache 2. Simply and clear.
Please elaborate.
What is it missing?