What options are there other than SANS?

I have 6 years of exp. in security and I'm looking to improve my technical skills specifically in IR & architecture. I already have CISSP, BTL1, AZ-500 and Splunk admin but I would like to do some courses that go more in depth than those ones. Are there any alternatives to certs like GCIH, GCFA, GMON, and GDSA? I know there won't be anything as good as the SANS classes but if there's anything that touches on the same subjects …

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