about 11% of total nodes
You should add some scare-quotes around "nodes". There are other ways of measuring nodes that classic advocates haven't figured out how to sibyl attack yet, through one of these mechanism I measure 4.7% (amusingly, it was roughly at the same number even at their peak of "25%"-- showing they've had more attrition of sybil nodes than actual ones). Of course, this doesn't measure actual users being behind those nodes, which I suspect is far lower...
blocks mined in the last 24 hours were in BIP-9 (old version without SW)
whereas typically half of the blocks mined were BIP 68 112 113 (new versions including SW)
coincident?
There are no blocks signaling SW yet. BIP68/112/113 have activated so they are no longer signaled, any miner still setting that bit would be seriously buggy.