I just went though ten pages of crumb cake on an image search and these are the best ones. The links will be a reminder so I can try each one haha..
http://shaunasever.com/2010/01/i-deserve-a-medal.html
https://www.baking-sense.com/2015/07/16/blueberry-crumb-cake/
https://www.savingdessert.com/lemon-crumble-breakfast-cake/
https://hugsandcookiesxoxo.com/2015/12/crumb-cake-cookies.html
https://lifeinbetween.me/2015/07/25/cinnamon-creme-crumb-cake/
https://entertainingwithbeth.com/classic-crumb-cake-recipe/
http://www.geniuskitchen.com/recipe/cream-cheese-filled-crumb-cake-366204
http://www.treats-sf.com/2011/07/crumb-cake.html
https://bigalittlea.com/2013/06/13/golden-butter-crumb-cake/
https://thecafesucrefarine.com/blueberry-crumb-cake/
https://www.browneyedbaker.com/chocolate-chip-crumb-cake/#more-1322
https://laurarebeccaskitchen.com/2008/04/02/new-york-style-crumb-cake/
http://www.whatsontheplate.com/new-york-style-crumb-cake/
https://www.cookingchanneltv.com/recipes/kelsey-nixon/spiced-pumpkin-crumb-cake-2124616
https://www.smalltownwoman.com/pumpkin-cream-cheese-crumb-cake/