Render files in Premiere Pro-supported formats
With Premiere Pro about to discontinue support for 32-bit legacy files, After Effects' render outputs should be formatted in non-legacy file types so they can work hassle-free in PrPro.
(I haven't had much luck fully retaining alpha channels with non-legacy formats from Ae renders)
Thank you for submitting this request, Michael.
We could use clarification. After Effects can already render to many different video, audio, and still formats, with and without alpha, that are compatible with Premiere Pro.
If you're having difficulty with a given format, perhaps some investigation is needed. To help you troubleshoot this, it would be best for you to start a new conversation on the Adobe Community Forums:
Once you do that, post the link to the discussion back here and I'll take a look.