I suspect that a much more accurate picture could be had by talking about alliances between interest groups than by talking about ideological spectra. Ideological spectra don't really make much sense once things get multidimensional.
People with widely varying ideological heritages will sometimes ally on particular issues. One example that always comes to my mind is the 1980s-era alliance between Christian conservatives and a faction of radical-feminists in the U.S., in support of anti-pornography laws. This led to the oddity of radical-feminist Catharine MacKinnon supporting the work of anti-feminists like James Dobson on the Meese Commission. And suburban environmentalists who find hunting distasteful (and frequently also support banning guns) are sometimes surprised that hunters are some of the most reliable supporters of wilderness protection. ("How could they really care about protecting wild animals when they want to kill them?")
I broadly agree with your comment but disagree in one respect.
Ideological spectra don't really make much sense once things get multidimensional.
I wouldn't go that far. The electromagnetic spectrum still makes sense even though light waves differ in more ways than just frequency. And the left-right axis is still meaningful even though there're extra dimensions of political variation, although one has to think carefully about operationalizing the left-right axis, and remember that it explains only, say, 40% of variance in political belief, rather than 100%.
This is a great article at Aeon magazine. The author argues that the new ideological dichotomy is going to be between people who have great faith in technology and human innovation (Up) and the people who believe that humans are much more tied to their biology and the Earth (Down).
LW of course is a very Up community.