I guess wizard spawn number on the map is 2. I once watched kRO vid and there are 2 wizards also.
About the knight i guess the spawn is similar to nine tail lol. Quite common.
Idk, was only 1 spawning and ever so rarely a 2nd one would spawn with him at his fixed spawn, and yesterday only found 2 knights on the map, now i had 5 follow me, think it might just be glitchy