Signing of ECDSA certs by E1 is opt-in only. If you're not on the opt-in list, your cert will be signed by R3, even if it's an ECDSA cert.
This is actually mentioned on the Chain of Trust page you've linked to by the way..
Crt.sh is backlogged a lot, depending on the CT log. See https://crt.sh/monitored-logs for current backlogs. One of the active Google CT logs is even backlogged 45 days!
There are other CT log aggregators, see Certificate Transparency Search Resources for more of them.