Literally all Italian ones in the last thirty years.
1993
75% majoritarian and 25% proportional for no reason at all. No actually the reason was to force bipolarism upon people without totally scrapping the proportional.
The proportional part was closed lists for the Chamber of Deputies. For the Senate it was literally giving seats to the best losers in the region.
Ah and there was this magical thing called
scorporo which basically meant that majoritarian candidates were linked to proportional lists and when you won your constituency your votes got subtracted from your list's proportional tally and it was just hilariously minoritarian until politicians got smarter and in 2001 both the left and the right just linked all their majoritarian candidates to fake lists to shift the scorporo burden on the fake lists.
After that it was decided to make a new law.
2005
100% proportional but had much bigger problems.
Literally if your coalition took 26% of the votes and the other coalition took 25% of the votes, you were automatically guaranteed 55% of the seats. However only in the Chamber of Deputies because in the Senate it worked on a regional basis (which tended to neutralize the effect if different coalitions won different regions).
Also closed lists, again.
In the end it was declared unconstitutional lol.
2017
37% majoritarian and 63% proportional for no reason at all. No actually the reason is that the Senate has half the seats of the Chamber of Deputies and they thought recycling the 1993 Senate map for the 2017 Chamber was a clever idea saving a lot of work to lawmakers.
The proportional part is closed lists. You can't even make panachage. Choice level = 0.
Hilarious gerrymandering in the Senate (really, look at the Emilia-Romagna map, it doesn't make any sense).
This is going to end soon since too bad we have just cut the number of Deputies and Senators - because we are stupid
- and this is now obsolete.