Public speakers DO develop mannerisms. It is an effort to avoid them.

Link words are fun as well. Uuuuuuuuummmmmmmmmmmm is a sign the speaker is making things up as they go along and need time to think.

For me if you over look what is actually being said, Mr Trump has a horrid delivery style.
Mr Biden has an annoying habit of repeating what he says.

After the election I hope the country has more friends that Russia, China, North Korea, Iran, Turkey....

TM