Cool idea! Haven’t seen your promos before. For obnoxious images you might like to take a look at my list of card artworks with real human photos:
www.elitefourum.com/t/pokemon-cards-with-real-human-photographs-masterlist-wip/30482/1
For unorthodox layouts, the Trade Please! (or Exchange Please!) promo with the holo back and the Lenticular Deoxys come to mind.
m.bulbapedia.bulbagarden.net/wiki/Trade_Please!_(Trade_Please_promo)
m.bulbapedia.bulbagarden.net/wiki/Movie_Commemoration_VS_Pack:_Sky-Splitting_Deoxys_(TCG)
BREAK cards and XY Mega evolutions look also pretty friggin strange and obnoxious if you ask me, but for some reason they were kinda the standard for some time.
m.bulbapedia.bulbagarden.net/wiki/M_Audino-EX_(Fates_Collide_85)
m.bulbapedia.bulbagarden.net/wiki/Pok%C3%A9mon_BREAK_(TCG)