I use Beautiful.ai to keep branding locked. Its PPTX export handles font...

https://lima-wiki.win/index.php/Why_Are_My_Charts_Exporting_as_Images_from_Gamma%3F_A_Professional%E2%80%99s_Guide_to_the_PPTX_Friction

I use Beautiful.ai to keep branding locked. Its PPTX export handles font substitutions well, ensuring layout consistency. It’s the fastest way to generate a 10-slide deck in under 60 seconds without losing design integrity