There are four main variations of permanent life: whole (or ordinary) life, universal (or adjustable) life, variable life, and variable universal life. (insurance.com)
In the UK, main variations in the stock of irregular migrants can be attributed to status - related in - and out - flows rather than physical mobility. (blog.politics.ox.ac.uk)
There are two main variations available; Universal and Variable Life. (lifeinsurance.org)